var Vue = (function (exports) {
    'use strict';
  
    // Make a map and return a function for checking if a key
    // is in that map.
    //
    // IMPORTANT: all calls of this function must be prefixed with /*#__PURE__*/
    // So that rollup can tree-shake them if necessary.
    function makeMap(str, expectsLowerCase) {
        const map = Object.create(null);
        const list = str.split(',');
        for (let i = 0; i < list.length; i++) {
            map[list[i]] = true;
        }
        return expectsLowerCase ? val => !!map[val.toLowerCase()] : val => !!map[val];
    }
  
    // Patch flags are optimization hints generated by the compiler.
    // when a block with dynamicChildren is encountered during diff, the algorithm
    // enters "optimized mode". In this mode, we know that the vdom is produced by
    // a render function generated by the compiler, so the algorithm only needs to
    // handle updates explicitly marked by these patch flags.
    // runtime object for public consumption
    const PublicPatchFlags = {
        TEXT: 1 /* TEXT */,
        CLASS: 2 /* CLASS */,
        STYLE: 4 /* STYLE */,
        PROPS: 8 /* PROPS */,
        NEED_PATCH: 32 /* NEED_PATCH */,
        FULL_PROPS: 16 /* FULL_PROPS */,
        KEYED_FRAGMENT: 128 /* KEYED_FRAGMENT */,
        UNKEYED_FRAGMENT: 256 /* UNKEYED_FRAGMENT */,
        DYNAMIC_SLOTS: 512 /* DYNAMIC_SLOTS */,
        BAIL: -1 /* BAIL */
    };
    // dev only flag -> name mapping
    const PatchFlagNames = {
        [1 /* TEXT */]: `TEXT`,
        [2 /* CLASS */]: `CLASS`,
        [4 /* STYLE */]: `STYLE`,
        [8 /* PROPS */]: `PROPS`,
        [32 /* NEED_PATCH */]: `NEED_PATCH`,
        [16 /* FULL_PROPS */]: `FULL_PROPS`,
        [64 /* STABLE_FRAGMENT */]: `STABLE_FRAGMENT`,
        [128 /* KEYED_FRAGMENT */]: `KEYED_FRAGMENT`,
        [256 /* UNKEYED_FRAGMENT */]: `UNKEYED_FRAGMENT`,
        [512 /* DYNAMIC_SLOTS */]: `DYNAMIC_SLOTS`,
        [-1 /* BAIL */]: `BAIL`
    };
  
    const GLOBALS_WHITE_LISTED = 'Infinity,undefined,NaN,isFinite,isNaN,parseFloat,parseInt,decodeURI,' +
        'decodeURIComponent,encodeURI,encodeURIComponent,Math,Number,Date,Array,' +
        'Object,Boolean,String,RegExp,Map,Set,JSON,Intl';
    const isGloballyWhitelisted = /*#__PURE__*/ makeMap(GLOBALS_WHITE_LISTED);
  
    const range = 2;
    function generateCodeFrame(source, start = 0, end = source.length) {
        const lines = source.split(/\r?\n/);
        let count = 0;
        const res = [];
        for (let i = 0; i < lines.length; i++) {
            count += lines[i].length + 1;
            if (count >= start) {
                for (let j = i - range; j <= i + range || end > count; j++) {
                    if (j < 0 || j >= lines.length)
                        continue;
                    const line = j + 1;
                    res.push(`${line}${' '.repeat(3 - String(line).length)}|  ${lines[j]}`);
                    const lineLength = lines[j].length;
                    if (j === i) {
                        // push underline
                        const pad = start - (count - lineLength) + 1;
                        const length = Math.max(1, end > count ? lineLength - pad : end - start);
                        res.push(`   |  ` + ' '.repeat(pad) + '^'.repeat(length));
                    }
                    else if (j > i) {
                        if (end > count) {
                            const length = Math.max(Math.min(end - count, lineLength), 1);
                            res.push(`   |  ` + '^'.repeat(length));
                        }
                        count += lineLength + 1;
                    }
                }
                break;
            }
        }
        return res.join('\n');
    }
  
    // These tag configs are shared between compiler-dom and runtime-dom, so they
    // https://developer.mozilla.org/en-US/docs/Web/HTML/Element
    const HTML_TAGS = 'html,body,base,head,link,meta,style,title,address,article,aside,footer,' +
        'header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,div,dd,dl,dt,figcaption,' +
        'figure,picture,hr,img,li,main,ol,p,pre,ul,a,b,abbr,bdi,bdo,br,cite,code,' +
        'data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,s,samp,small,span,strong,sub,sup,' +
        'time,u,var,wbr,area,audio,map,track,video,embed,object,param,source,' +
        'canvas,script,noscript,del,ins,caption,col,colgroup,table,thead,tbody,td,' +
        'th,tr,button,datalist,fieldset,form,input,label,legend,meter,optgroup,' +
        'option,output,progress,select,textarea,details,dialog,menu,menuitem,' +
        'summary,content,element,shadow,template,blockquote,iframe,tfoot';
    // https://developer.mozilla.org/en-US/docs/Web/SVG/Element
    const SVG_TAGS = 'svg,animate,animateMotion,animateTransform,circle,clipPath,color-profile,' +
        'defs,desc,discard,ellipse,feBlend,feColorMatrix,feComponentTransfer,' +
        'feComposite,feConvolveMatrix,feDiffuseLighting,feDisplacementMap,' +
        'feDistanceLight,feDropShadow,feFlood,feFuncA,feFuncB,feFuncG,feFuncR,' +
        'feGaussianBlur,feImage,feMerge,feMergeNode,feMorphology,feOffset,' +
        'fePointLight,feSpecularLighting,feSpotLight,feTile,feTurbulence,filter,' +
        'foreignObject,g,hatch,hatchpath,image,line,lineGradient,marker,mask,' +
        'mesh,meshgradient,meshpatch,meshrow,metadata,mpath,path,pattern,' +
        'polygon,polyline,radialGradient,rect,set,solidcolor,stop,switch,symbol,' +
        'text,textPath,title,tspan,unknown,use,view';
    const VOID_TAGS = 'area,base,br,col,embed,hr,img,input,link,meta,param,source,track,wbr';
    const isHTMLTag = /*#__PURE__*/ makeMap(HTML_TAGS);
    const isSVGTag = /*#__PURE__*/ makeMap(SVG_TAGS);
    const isVoidTag = /*#__PURE__*/ makeMap(VOID_TAGS);
  
    const EMPTY_OBJ =  Object.freeze({})
        ;
    const EMPTY_ARR = [];
    const NOOP = () => { };
    /**
     * Always return false.
     */
    const NO = () => false;
    const isOn = (key) => key[0] === 'o' && key[1] === 'n';
    const extend = (a, b) => {
        for (const key in b) {
            a[key] = b[key];
        }
        return a;
    };
    const hasOwnProperty = Object.prototype.hasOwnProperty;
    const hasOwn = (val, key) => hasOwnProperty.call(val, key);
    const isArray = Array.isArray;
    const isFunction = (val) => typeof val === 'function';
    const isString = (val) => typeof val === 'string';
    const isSymbol = (val) => typeof val === 'symbol';
    const isObject = (val) => val !== null && typeof val === 'object';
    function isPromise(val) {
        return isObject(val) && isFunction(val.then) && isFunction(val.catch);
    }
    const objectToString = Object.prototype.toString;
    const toTypeString = (value) => objectToString.call(value);
    function toRawType(value) {
        return toTypeString(value).slice(8, -1);
    }
    const isPlainObject = (val) => toTypeString(val) === '[object Object]';
    const isReservedProp = /*#__PURE__*/ makeMap('key,ref,' +
        'onVnodeBeforeMount,onVnodeMounted,' +
        'onVnodeBeforeUpdate,onVnodeUpdated,' +
        'onVnodeBeforeUnmount,onVnodeUnmounted');
    function cacheStringFunction(fn) {
        const cache = Object.create(null);
        return ((str) => {
            const hit = cache[str];
            return hit || (cache[str] = fn(str));
        });
    }
    const camelizeRE = /-(\w)/g;
    const camelize = cacheStringFunction((str) => {
        return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
    });
    const hyphenateRE = /\B([A-Z])/g;
    const hyphenate = cacheStringFunction((str) => {
        return str.replace(hyphenateRE, '-$1').toLowerCase();
    });
    const capitalize = cacheStringFunction((str) => {
        return str.charAt(0).toUpperCase() + str.slice(1);
    });
    // compare whether a value has changed, accounting for NaN.
    const hasChanged = (value, oldValue) => value !== oldValue && (value === value || oldValue === oldValue);
  
    function defaultOnError(error) {
        throw error;
    }
    function createCompilerError(code, loc, messages) {
        const msg =  (messages || errorMessages)[code] ;
        const error = new SyntaxError(String(msg));
        error.code = code;
        error.loc = loc;
        return error;
    }
    const errorMessages = {
        // parse errors
        [0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */]: 'Illegal comment.',
        [1 /* ABSENCE_OF_DIGITS_IN_NUMERIC_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: invalid character.',
        [2 /* CDATA_IN_HTML_CONTENT */]: 'CDATA section is allowed only in XML context.',
        [3 /* CHARACTER_REFERENCE_OUTSIDE_UNICODE_RANGE */]: 'Illegal numeric character reference: too big.',
        [4 /* CONTROL_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: control character.',
        [5 /* DUPLICATE_ATTRIBUTE */]: 'Duplicate attribute.',
        [6 /* END_TAG_WITH_ATTRIBUTES */]: 'End tag cannot have attributes.',
        [7 /* END_TAG_WITH_TRAILING_SOLIDUS */]: "Illegal '/' in tags.",
        [8 /* EOF_BEFORE_TAG_NAME */]: 'Unexpected EOF in tag.',
        [9 /* EOF_IN_CDATA */]: 'Unexpected EOF in CDATA section.',
        [10 /* EOF_IN_COMMENT */]: 'Unexpected EOF in comment.',
        [11 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */]: 'Unexpected EOF in script.',
        [12 /* EOF_IN_TAG */]: 'Unexpected EOF in tag.',
        [13 /* INCORRECTLY_CLOSED_COMMENT */]: 'Incorrectly closed comment.',
        [14 /* INCORRECTLY_OPENED_COMMENT */]: 'Incorrectly opened comment.',
        [15 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */]: "Illegal tag name. Use '&lt;' to print '<'.",
        [16 /* MISSING_ATTRIBUTE_VALUE */]: 'Attribute value was expected.',
        [17 /* MISSING_END_TAG_NAME */]: 'End tag name was expected.',
        [18 /* MISSING_SEMICOLON_AFTER_CHARACTER_REFERENCE */]: 'Semicolon was expected.',
        [19 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */]: 'Whitespace was expected.',
        [20 /* NESTED_COMMENT */]: "Unexpected '<!--' in comment.",
        [21 /* NONCHARACTER_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: non character.',
        [22 /* NULL_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: null character.',
        [23 /* SURROGATE_CHARACTER_REFERENCE */]: 'Illegal numeric character reference: non-pair surrogate.',
        [24 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */]: 'Attribute name cannot contain U+0022 ("), U+0027 (\'), and U+003C (<).',
        [25 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */]: 'Unquoted attribute value cannot contain U+0022 ("), U+0027 (\'), U+003C (<), U+003D (=), and U+0060 (`).',
        [26 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */]: "Attribute name cannot start with '='.",
        [28 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */]: "'<?' is allowed only in XML context.",
        [29 /* UNEXPECTED_SOLIDUS_IN_TAG */]: "Illegal '/' in tags.",
        [30 /* UNKNOWN_NAMED_CHARACTER_REFERENCE */]: 'Unknown entity name.',
        // Vue-specific parse errors
        [31 /* X_INVALID_END_TAG */]: 'Invalid end tag.',
        [32 /* X_MISSING_END_TAG */]: 'Element is missing end tag.',
        [33 /* X_MISSING_INTERPOLATION_END */]: 'Interpolation end sign was not found.',
        [34 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */]: 'End bracket for dynamic directive argument was not found. ' +
            'Note that dynamic directive argument cannot contain spaces.',
        // transform errors
        [35 /* X_V_IF_NO_EXPRESSION */]: `v-if/v-else-if is missing expression.`,
        [36 /* X_V_ELSE_NO_ADJACENT_IF */]: `v-else/v-else-if has no adjacent v-if.`,
        [37 /* X_V_FOR_NO_EXPRESSION */]: `v-for is missing expression.`,
        [38 /* X_V_FOR_MALFORMED_EXPRESSION */]: `v-for has invalid expression.`,
        [39 /* X_V_BIND_NO_EXPRESSION */]: `v-bind is missing expression.`,
        [40 /* X_V_ON_NO_EXPRESSION */]: `v-on is missing expression.`,
        [41 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */]: `Unexpected custom directive on <slot> outlet.`,
        [42 /* X_V_SLOT_NAMED_SLOT_ON_COMPONENT */]: `Named v-slot on component. ` +
            `Named slots should use <template v-slot> syntax nested inside the component.`,
        [43 /* X_V_SLOT_MIXED_SLOT_USAGE */]: `Mixed v-slot usage on both the component and nested <template>.` +
            `The default slot should also use <template> syntax when there are other ` +
            `named slots to avoid scope ambiguity.`,
        [44 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */]: `Duplicate slot names found. `,
        [45 /* X_V_SLOT_EXTRANEOUS_NON_SLOT_CHILDREN */]: `Extraneous children found when component has explicit slots. ` +
            `These children will be ignored.`,
        [46 /* X_V_SLOT_MISPLACED */]: `v-slot can only be used on components or <template> tags.`,
        [47 /* X_V_MODEL_NO_EXPRESSION */]: `v-model is missing expression.`,
        [48 /* X_V_MODEL_MALFORMED_EXPRESSION */]: `v-model value must be a valid JavaScript member expression.`,
        [49 /* X_V_MODEL_ON_SCOPE_VARIABLE */]: `v-model cannot be used on v-for or v-slot scope variables because they are not writable.`,
        [50 /* X_INVALID_EXPRESSION */]: `Invalid JavaScript expression.`,
        // generic errors
        [51 /* X_PREFIX_ID_NOT_SUPPORTED */]: `"prefixIdentifiers" option is not supported in this build of compiler.`,
        [52 /* X_MODULE_MODE_NOT_SUPPORTED */]: `ES module mode is not supported in this build of compiler.`,
        [53 /* X_CACHE_HANDLER_NOT_SUPPORTED */]: `"cacheHandlers" option is only supported when the "prefixIdentifiers" option is enabled.`,
        [54 /* X_SCOPE_ID_NOT_SUPPORTED */]: `"scopeId" option is only supported in module mode.`
    };
  
    // AST Utilities ---------------------------------------------------------------
    // Some expressions, e.g. sequence and conditional expressions, are never
    // associated with template nodes, so their source locations are just a stub.
    // Container types like CompoundExpression also don't need a real location.
    const locStub = {
        source: '',
        start: { line: 1, column: 1, offset: 0 },
        end: { line: 1, column: 1, offset: 0 }
    };
    function createArrayExpression(elements, loc = locStub) {
        return {
            type: 16 /* JS_ARRAY_EXPRESSION */,
            loc,
            elements
        };
    }
    function createObjectExpression(properties, loc = locStub) {
        return {
            type: 14 /* JS_OBJECT_EXPRESSION */,
            loc,
            properties
        };
    }
    function createObjectProperty(key, value) {
        return {
            type: 15 /* JS_PROPERTY */,
            loc: locStub,
            key: isString(key) ? createSimpleExpression(key, true) : key,
            value
        };
    }
    function createSimpleExpression(content, isStatic, loc = locStub, isConstant = false) {
        return {
            type: 4 /* SIMPLE_EXPRESSION */,
            loc,
            isConstant,
            content,
            isStatic
        };
    }
    function createCompoundExpression(children, loc = locStub) {
        return {
            type: 8 /* COMPOUND_EXPRESSION */,
            loc,
            children
        };
    }
    function createCallExpression(callee, args = [], loc = locStub) {
        return {
            type: 13 /* JS_CALL_EXPRESSION */,
            loc,
            callee,
            arguments: args
        };
    }
    function createFunctionExpression(params, returns, newline = false, isSlot = false, loc = locStub) {
        return {
            type: 17 /* JS_FUNCTION_EXPRESSION */,
            params,
            returns,
            newline,
            isSlot,
            loc
        };
    }
    function createSequenceExpression(expressions) {
        return {
            type: 18 /* JS_SEQUENCE_EXPRESSION */,
            expressions,
            loc: locStub
        };
    }
    function createConditionalExpression(test, consequent, alternate) {
        return {
            type: 19 /* JS_CONDITIONAL_EXPRESSION */,
            test,
            consequent,
            alternate,
            loc: locStub
        };
    }
    function createCacheExpression(index, value, isVNode = false) {
        return {
            type: 20 /* JS_CACHE_EXPRESSION */,
            index,
            value,
            isVNode,
            loc: locStub
        };
    }
  
    const FRAGMENT = Symbol( `Fragment` );
    const PORTAL = Symbol( `Portal` );
    const SUSPENSE = Symbol( `Suspense` );
    const KEEP_ALIVE = Symbol( `KeepAlive` );
    const BASE_TRANSITION = Symbol( `BaseTransition` );
    const OPEN_BLOCK = Symbol( `openBlock` );
    const CREATE_BLOCK = Symbol( `createBlock` );
    const CREATE_VNODE = Symbol( `createVNode` );
    const CREATE_COMMENT = Symbol( `createCommentVNode` );
    const CREATE_TEXT = Symbol( `createTextVNode` );
    const RESOLVE_COMPONENT = Symbol( `resolveComponent` );
    const RESOLVE_DYNAMIC_COMPONENT = Symbol( `resolveDynamicComponent` );
    const RESOLVE_DIRECTIVE = Symbol( `resolveDirective` );
    const WITH_DIRECTIVES = Symbol( `withDirectives` );
    const RENDER_LIST = Symbol( `renderList` );
    const RENDER_SLOT = Symbol( `renderSlot` );
    const CREATE_SLOTS = Symbol( `createSlots` );
    const TO_STRING = Symbol( `toString` );
    const MERGE_PROPS = Symbol( `mergeProps` );
    const TO_HANDLERS = Symbol( `toHandlers` );
    const CAMELIZE = Symbol( `camelize` );
    const SET_BLOCK_TRACKING = Symbol( `setBlockTracking` );
    const PUSH_SCOPE_ID = Symbol( `pushScopeId` );
    const POP_SCOPE_ID = Symbol( `popScopeId` );
    const WITH_SCOPE_ID = Symbol( `withScopeId` );
    // Name mapping for runtime helpers that need to be imported from 'vue' in
    // generated code. Make sure these are correctly exported in the runtime!
    // Using `any` here because TS doesn't allow symbols as index type.
    const helperNameMap = {
        [FRAGMENT]: `Fragment`,
        [PORTAL]: `Portal`,
        [SUSPENSE]: `Suspense`,
        [KEEP_ALIVE]: `KeepAlive`,
        [BASE_TRANSITION]: `BaseTransition`,
        [OPEN_BLOCK]: `openBlock`,
        [CREATE_BLOCK]: `createBlock`,
        [CREATE_VNODE]: `createVNode`,
        [CREATE_COMMENT]: `createCommentVNode`,
        [CREATE_TEXT]: `createTextVNode`,
        [RESOLVE_COMPONENT]: `resolveComponent`,
        [RESOLVE_DYNAMIC_COMPONENT]: `resolveDynamicComponent`,
        [RESOLVE_DIRECTIVE]: `resolveDirective`,
        [WITH_DIRECTIVES]: `withDirectives`,
        [RENDER_LIST]: `renderList`,
        [RENDER_SLOT]: `renderSlot`,
        [CREATE_SLOTS]: `createSlots`,
        [TO_STRING]: `toString`,
        [MERGE_PROPS]: `mergeProps`,
        [TO_HANDLERS]: `toHandlers`,
        [CAMELIZE]: `camelize`,
        [SET_BLOCK_TRACKING]: `setBlockTracking`,
        [PUSH_SCOPE_ID]: `pushScopeId`,
        [POP_SCOPE_ID]: `popScopeId`,
        [WITH_SCOPE_ID]: `withScopeId`
    };
    function registerRuntimeHelpers(helpers) {
        Object.getOwnPropertySymbols(helpers).forEach(s => {
            helperNameMap[s] = helpers[s];
        });
    }
  
    const isBuiltInType = (tag, expected) => tag === expected || tag === hyphenate(expected);
    function isCoreComponent(tag) {
        if (isBuiltInType(tag, 'Portal')) {
            return PORTAL;
        }
        else if (isBuiltInType(tag, 'Suspense')) {
            return SUSPENSE;
        }
        else if (isBuiltInType(tag, 'KeepAlive')) {
            return KEEP_ALIVE;
        }
        else if (isBuiltInType(tag, 'BaseTransition')) {
            return BASE_TRANSITION;
        }
    }
    const nonIdentifierRE = /^\d|[^\$\w]/;
    const isSimpleIdentifier = (name) => !nonIdentifierRE.test(name);
    const memberExpRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\[[^\]]+\])*$/;
    const isMemberExpression = (path) => memberExpRE.test(path);
    function getInnerRange(loc, offset, length) {
        const source = loc.source.substr(offset, length);
        const newLoc = {
            source,
            start: advancePositionWithClone(loc.start, loc.source, offset),
            end: loc.end
        };
        if (length != null) {
            newLoc.end = advancePositionWithClone(loc.start, loc.source, offset + length);
        }
        return newLoc;
    }
    function advancePositionWithClone(pos, source, numberOfCharacters = source.length) {
        return advancePositionWithMutation({ ...pos }, source, numberOfCharacters);
    }
    // advance by mutation without cloning (for performance reasons), since this
    // gets called a lot in the parser
    function advancePositionWithMutation(pos, source, numberOfCharacters = source.length) {
        let linesCount = 0;
        let lastNewLinePos = -1;
        for (let i = 0; i < numberOfCharacters; i++) {
            if (source.charCodeAt(i) === 10 /* newline char code */) {
                linesCount++;
                lastNewLinePos = i;
            }
        }
        pos.offset += numberOfCharacters;
        pos.line += linesCount;
        pos.column =
            lastNewLinePos === -1
                ? pos.column + numberOfCharacters
                : numberOfCharacters - lastNewLinePos;
        return pos;
    }
    function assert(condition, msg) {
        /* istanbul ignore if */
        if (!condition) {
            throw new Error(msg || `unexpected compiler condition`);
        }
    }
    function findDir(node, name, allowEmpty = false) {
        for (let i = 0; i < node.props.length; i++) {
            const p = node.props[i];
            if (p.type === 7 /* DIRECTIVE */ &&
                (allowEmpty || p.exp) &&
                (isString(name) ? p.name === name : name.test(p.name))) {
                return p;
            }
        }
    }
    function findProp(node, name, dynamicOnly = false) {
        for (let i = 0; i < node.props.length; i++) {
            const p = node.props[i];
            if (p.type === 6 /* ATTRIBUTE */) {
                if (dynamicOnly)
                    continue;
                if (p.name === name && p.value) {
                    return p;
                }
            }
            else if (p.name === 'bind' &&
                p.arg &&
                p.arg.type === 4 /* SIMPLE_EXPRESSION */ &&
                p.arg.isStatic &&
                p.arg.content === name &&
                p.exp) {
                return p;
            }
        }
    }
    function createBlockExpression(blockExp, context) {
        return createSequenceExpression([
            createCallExpression(context.helper(OPEN_BLOCK)),
            blockExp
        ]);
    }
    function isVSlot(p) {
        return p.type === 7 /* DIRECTIVE */ && p.name === 'slot';
    }
    function isTemplateNode(node) {
        return (node.type === 1 /* ELEMENT */ && node.tagType === 3 /* TEMPLATE */);
    }
    function isSlotOutlet(node) {
        return node.type === 1 /* ELEMENT */ && node.tagType === 2 /* SLOT */;
    }
    function injectProp(node, prop, context) {
        let propsWithInjection;
        const props = node.callee === RENDER_SLOT ? node.arguments[2] : node.arguments[1];
        if (props == null || isString(props)) {
            propsWithInjection = createObjectExpression([prop]);
        }
        else if (props.type === 13 /* JS_CALL_EXPRESSION */) {
            // merged props... add ours
            // only inject key to object literal if it's the first argument so that
            // if doesn't override user provided keys
            const first = props.arguments[0];
            if (!isString(first) && first.type === 14 /* JS_OBJECT_EXPRESSION */) {
                first.properties.unshift(prop);
            }
            else {
                props.arguments.unshift(createObjectExpression([prop]));
            }
            propsWithInjection = props;
        }
        else if (props.type === 14 /* JS_OBJECT_EXPRESSION */) {
            props.properties.unshift(prop);
            propsWithInjection = props;
        }
        else {
            // single v-bind with expression, return a merged replacement
            propsWithInjection = createCallExpression(context.helper(MERGE_PROPS), [
                createObjectExpression([prop]),
                props
            ]);
        }
        if (node.callee === RENDER_SLOT) {
            node.arguments[2] = propsWithInjection;
        }
        else {
            node.arguments[1] = propsWithInjection;
        }
    }
    function toValidAssetId(name, type) {
        return `_${type}_${name.replace(/[^\w]/g, '_')}`;
    }
  
    const defaultParserOptions = {
        delimiters: [`{{`, `}}`],
        getNamespace: () => 0 /* HTML */,
        getTextMode: () => 0 /* DATA */,
        isVoidTag: NO,
        isPreTag: NO,
        isCustomElement: NO,
        namedCharacterReferences: {
            'gt;': '>',
            'lt;': '<',
            'amp;': '&',
            'apos;': "'",
            'quot;': '"'
        },
        maxCRNameLength: 5,
        onError: defaultOnError
    };
    function baseParse(content, options = {}) {
        const context = createParserContext(content, options);
        const start = getCursor(context);
        return {
            type: 0 /* ROOT */,
            children: parseChildren(context, 0 /* DATA */, []),
            helpers: [],
            components: [],
            directives: [],
            hoists: [],
            imports: [],
            cached: 0,
            codegenNode: undefined,
            loc: getSelection(context, start)
        };
    }
    function createParserContext(content, options) {
        return {
            options: {
                ...defaultParserOptions,
                ...options
            },
            column: 1,
            line: 1,
            offset: 0,
            originalSource: content,
            source: content,
            inPre: false
        };
    }
    function parseChildren(context, mode, ancestors) {
        const parent = last(ancestors);
        const ns = parent ? parent.ns : 0 /* HTML */;
        const nodes = [];
        while (!isEnd(context, mode, ancestors)) {
            const s = context.source;
            let node = undefined;
            if (mode === 0 /* DATA */) {
                if (!context.inPre && startsWith(s, context.options.delimiters[0])) {
                    // '{{'
                    node = parseInterpolation(context, mode);
                }
                else if (s[0] === '<') {
                    // https://html.spec.whatwg.org/multipage/parsing.html#tag-open-state
                    if (s.length === 1) {
                        emitError(context, 8 /* EOF_BEFORE_TAG_NAME */, 1);
                    }
                    else if (s[1] === '!') {
                        // https://html.spec.whatwg.org/multipage/parsing.html#markup-declaration-open-state
                        if (startsWith(s, '<!--')) {
                            node = parseComment(context);
                        }
                        else if (startsWith(s, '<!DOCTYPE')) {
                            // Ignore DOCTYPE by a limitation.
                            node = parseBogusComment(context);
                        }
                        else if (startsWith(s, '<![CDATA[')) {
                            if (ns !== 0 /* HTML */) {
                                node = parseCDATA(context, ancestors);
                            }
                            else {
                                emitError(context, 2 /* CDATA_IN_HTML_CONTENT */);
                                node = parseBogusComment(context);
                            }
                        }
                        else {
                            emitError(context, 14 /* INCORRECTLY_OPENED_COMMENT */);
                            node = parseBogusComment(context);
                        }
                    }
                    else if (s[1] === '/') {
                        // https://html.spec.whatwg.org/multipage/parsing.html#end-tag-open-state
                        if (s.length === 2) {
                            emitError(context, 8 /* EOF_BEFORE_TAG_NAME */, 2);
                        }
                        else if (s[2] === '>') {
                            emitError(context, 17 /* MISSING_END_TAG_NAME */, 2);
                            advanceBy(context, 3);
                            continue;
                        }
                        else if (/[a-z]/i.test(s[2])) {
                            emitError(context, 31 /* X_INVALID_END_TAG */);
                            parseTag(context, 1 /* End */, parent);
                            continue;
                        }
                        else {
                            emitError(context, 15 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 2);
                            node = parseBogusComment(context);
                        }
                    }
                    else if (/[a-z]/i.test(s[1])) {
                        node = parseElement(context, ancestors);
                    }
                    else if (s[1] === '?') {
                        emitError(context, 28 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */, 1);
                        node = parseBogusComment(context);
                    }
                    else {
                        emitError(context, 15 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 1);
                    }
                }
            }
            if (!node) {
                node = parseText(context, mode);
            }
            if (isArray(node)) {
                for (let i = 0; i < node.length; i++) {
                    pushNode(nodes, node[i]);
                }
            }
            else {
                pushNode(nodes, node);
            }
        }
        // Whitespace management for more efficient output
        // (same as v2 whitespace: 'condense')
        let removedWhitespace = false;
        if (mode !== 2 /* RAWTEXT */ &&
            (!parent || !context.options.isPreTag(parent.tag))) {
            for (let i = 0; i < nodes.length; i++) {
                const node = nodes[i];
                if (node.type === 2 /* TEXT */) {
                    if (!node.content.trim()) {
                        const prev = nodes[i - 1];
                        const next = nodes[i + 1];
                        // If:
                        // - the whitespace is the first or last node, or:
                        // - the whitespace is adjacent to a comment, or:
                        // - the whitespace is between two elements AND contains newline
                        // Then the whitespace is ignored.
                        if (!prev ||
                            !next ||
                            prev.type === 3 /* COMMENT */ ||
                            next.type === 3 /* COMMENT */ ||
                            (prev.type === 1 /* ELEMENT */ &&
                                next.type === 1 /* ELEMENT */ &&
                                /[\r\n]/.test(node.content))) {
                            removedWhitespace = true;
                            nodes[i] = null;
                        }
                        else {
                            // Otherwise, condensed consecutive whitespace inside the text down to
                            // a single space
                            node.content = ' ';
                        }
                    }
                    else {
                        node.content = node.content.replace(/\s+/g, ' ');
                    }
                }
            }
        }
        return removedWhitespace ? nodes.filter(Boolean) : nodes;
    }
    function pushNode(nodes, node) {
        if (node.type === 2 /* TEXT */) {
            const prev = last(nodes);
            // Merge if both this and the previous node are text and those are
            // consecutive. This happens for cases like "a < b".
            if (prev &&
                prev.type === 2 /* TEXT */ &&
                prev.loc.end.offset === node.loc.start.offset) {
                prev.content += node.content;
                prev.loc.end = node.loc.end;
                prev.loc.source += node.loc.source;
                return;
            }
        }
        nodes.push(node);
    }
    function parseCDATA(context, ancestors) {
        advanceBy(context, 9);
        const nodes = parseChildren(context, 3 /* CDATA */, ancestors);
        if (context.source.length === 0) {
            emitError(context, 9 /* EOF_IN_CDATA */);
        }
        else {
            advanceBy(context, 3);
        }
        return nodes;
    }
    function parseComment(context) {
        const start = getCursor(context);
        let content;
        // Regular comment.
        const match = /--(\!)?>/.exec(context.source);
        if (!match) {
            content = context.source.slice(4);
            advanceBy(context, context.source.length);
            emitError(context, 10 /* EOF_IN_COMMENT */);
        }
        else {
            if (match.index <= 3) {
                emitError(context, 0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */);
            }
            if (match[1]) {
                emitError(context, 13 /* INCORRECTLY_CLOSED_COMMENT */);
            }
            content = context.source.slice(4, match.index);
            // Advancing with reporting nested comments.
            const s = context.source.slice(0, match.index);
            let prevIndex = 1, nestedIndex = 0;
            while ((nestedIndex = s.indexOf('<!--', prevIndex)) !== -1) {
                advanceBy(context, nestedIndex - prevIndex + 1);
                if (nestedIndex + 4 < s.length) {
                    emitError(context, 20 /* NESTED_COMMENT */);
                }
                prevIndex = nestedIndex + 1;
            }
            advanceBy(context, match.index + match[0].length - prevIndex + 1);
        }
        return {
            type: 3 /* COMMENT */,
            content,
            loc: getSelection(context, start)
        };
    }
    function parseBogusComment(context) {
        const start = getCursor(context);
        const contentStart = context.source[1] === '?' ? 1 : 2;
        let content;
        const closeIndex = context.source.indexOf('>');
        if (closeIndex === -1) {
            content = context.source.slice(contentStart);
            advanceBy(context, context.source.length);
        }
        else {
            content = context.source.slice(contentStart, closeIndex);
            advanceBy(context, closeIndex + 1);
        }
        return {
            type: 3 /* COMMENT */,
            content,
            loc: getSelection(context, start)
        };
    }
    function parseElement(context, ancestors) {
        // Start tag.
        const wasInPre = context.inPre;
        const parent = last(ancestors);
        const element = parseTag(context, 0 /* Start */, parent);
        const isPreBoundary = context.inPre && !wasInPre;
        if (element.isSelfClosing || context.options.isVoidTag(element.tag)) {
            return element;
        }
        // Children.
        ancestors.push(element);
        const mode = context.options.getTextMode(element.tag, element.ns, parent);
        const children = parseChildren(context, mode, ancestors);
        ancestors.pop();
        element.children = children;
        // End tag.
        if (startsWithEndTagOpen(context.source, element.tag)) {
            parseTag(context, 1 /* End */, parent);
        }
        else {
            emitError(context, 32 /* X_MISSING_END_TAG */, 0, element.loc.start);
            if (context.source.length === 0 && element.tag.toLowerCase() === 'script') {
                const first = children[0];
                if (first && startsWith(first.loc.source, '<!--')) {
                    emitError(context, 11 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */);
                }
            }
        }
        element.loc = getSelection(context, element.loc.start);
        if (isPreBoundary) {
            context.inPre = false;
        }
        return element;
    }
    /**
     * Parse a tag (E.g. `<div id=a>`) with that type (start tag or end tag).
     */
    function parseTag(context, type, parent) {
        // Tag open.
        const start = getCursor(context);
        const match = /^<\/?([a-z][^\t\r\n\f />]*)/i.exec(context.source);
        const tag = match[1];
        const ns = context.options.getNamespace(tag, parent);
        advanceBy(context, match[0].length);
        advanceSpaces(context);
        // save current state in case we need to re-parse attributes with v-pre
        const cursor = getCursor(context);
        const currentSource = context.source;
        // Attributes.
        let props = parseAttributes(context, type);
        // check v-pre
        if (!context.inPre &&
            props.some(p => p.type === 7 /* DIRECTIVE */ && p.name === 'pre')) {
            context.inPre = true;
            // reset context
            extend(context, cursor);
            context.source = currentSource;
            // re-parse attrs and filter out v-pre itself
            props = parseAttributes(context, type).filter(p => p.name !== 'v-pre');
        }
        // Tag close.
        let isSelfClosing = false;
        if (context.source.length === 0) {
            emitError(context, 12 /* EOF_IN_TAG */);
        }
        else {
            isSelfClosing = startsWith(context.source, '/>');
            if (type === 1 /* End */ && isSelfClosing) {
                emitError(context, 7 /* END_TAG_WITH_TRAILING_SOLIDUS */);
            }
            advanceBy(context, isSelfClosing ? 2 : 1);
        }
        let tagType = 0 /* ELEMENT */;
        const options = context.options;
        if (!context.inPre && !options.isCustomElement(tag)) {
            if (options.isNativeTag) {
                if (!options.isNativeTag(tag))
                    tagType = 1 /* COMPONENT */;
            }
            else if (isCoreComponent(tag) ||
                (options.isBuiltInComponent && options.isBuiltInComponent(tag)) ||
                /^[A-Z]/.test(tag)) {
                tagType = 1 /* COMPONENT */;
            }
            if (tag === 'slot') {
                tagType = 2 /* SLOT */;
            }
            else if (tag === 'template') {
                tagType = 3 /* TEMPLATE */;
            }
        }
        return {
            type: 1 /* ELEMENT */,
            ns,
            tag,
            tagType,
            props,
            isSelfClosing,
            children: [],
            loc: getSelection(context, start),
            codegenNode: undefined // to be created during transform phase
        };
    }
    function parseAttributes(context, type) {
        const props = [];
        const attributeNames = new Set();
        while (context.source.length > 0 &&
            !startsWith(context.source, '>') &&
            !startsWith(context.source, '/>')) {
            if (startsWith(context.source, '/')) {
                emitError(context, 29 /* UNEXPECTED_SOLIDUS_IN_TAG */);
                advanceBy(context, 1);
                advanceSpaces(context);
                continue;
            }
            if (type === 1 /* End */) {
                emitError(context, 6 /* END_TAG_WITH_ATTRIBUTES */);
            }
            const attr = parseAttribute(context, attributeNames);
            if (type === 0 /* Start */) {
                props.push(attr);
            }
            if (/^[^\t\r\n\f />]/.test(context.source)) {
                emitError(context, 19 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */);
            }
            advanceSpaces(context);
        }
        return props;
    }
    function parseAttribute(context, nameSet) {
        // Name.
        const start = getCursor(context);
        const match = /^[^\t\r\n\f />][^\t\r\n\f />=]*/.exec(context.source);
        const name = match[0];
        if (nameSet.has(name)) {
            emitError(context, 5 /* DUPLICATE_ATTRIBUTE */);
        }
        nameSet.add(name);
        if (name[0] === '=') {
            emitError(context, 26 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */);
        }
        {
            const pattern = /["'<]/g;
            let m;
            while ((m = pattern.exec(name)) !== null) {
                emitError(context, 24 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */, m.index);
            }
        }
        advanceBy(context, name.length);
        // Value
        let value = undefined;
        if (/^[\t\r\n\f ]*=/.test(context.source)) {
            advanceSpaces(context);
            advanceBy(context, 1);
            advanceSpaces(context);
            value = parseAttributeValue(context);
            if (!value) {
                emitError(context, 16 /* MISSING_ATTRIBUTE_VALUE */);
            }
        }
        const loc = getSelection(context, start);
        if (!context.inPre && /^(v-|:|@|#)/.test(name)) {
            const match = /(?:^v-([a-z0-9-]+))?(?:(?::|^@|^#)([^\.]+))?(.+)?$/i.exec(name);
            let arg;
            if (match[2]) {
                const startOffset = name.indexOf(match[2]);
                const loc = getSelection(context, getNewPosition(context, start, startOffset), getNewPosition(context, start, startOffset + match[2].length));
                let content = match[2];
                let isStatic = true;
                if (content.startsWith('[')) {
                    isStatic = false;
                    if (!content.endsWith(']')) {
                        emitError(context, 34 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */);
                    }
                    content = content.substr(1, content.length - 2);
                }
                arg = {
                    type: 4 /* SIMPLE_EXPRESSION */,
                    content,
                    isStatic,
                    isConstant: isStatic,
                    loc
                };
            }
            if (value && value.isQuoted) {
                const valueLoc = value.loc;
                valueLoc.start.offset++;
                valueLoc.start.column++;
                valueLoc.end = advancePositionWithClone(valueLoc.start, value.content);
                valueLoc.source = valueLoc.source.slice(1, -1);
            }
            return {
                type: 7 /* DIRECTIVE */,
                name: match[1] ||
                    (startsWith(name, ':')
                        ? 'bind'
                        : startsWith(name, '@')
                            ? 'on'
                            : 'slot'),
                exp: value && {
                    type: 4 /* SIMPLE_EXPRESSION */,
                    content: value.content,
                    isStatic: false,
                    // Treat as non-constant by default. This can be potentially set to
                    // true by `transformExpression` to make it eligible for hoisting.
                    isConstant: false,
                    loc: value.loc
                },
                arg,
                modifiers: match[3] ? match[3].substr(1).split('.') : [],
                loc
            };
        }
        return {
            type: 6 /* ATTRIBUTE */,
            name,
            value: value && {
                type: 2 /* TEXT */,
                content: value.content,
                loc: value.loc
            },
            loc
        };
    }
    function parseAttributeValue(context) {
        const start = getCursor(context);
        let content;
        const quote = context.source[0];
        const isQuoted = quote === `"` || quote === `'`;
        if (isQuoted) {
            // Quoted value.
            advanceBy(context, 1);
            const endIndex = context.source.indexOf(quote);
            if (endIndex === -1) {
                content = parseTextData(context, context.source.length, 4 /* ATTRIBUTE_VALUE */);
            }
            else {
                content = parseTextData(context, endIndex, 4 /* ATTRIBUTE_VALUE */);
                advanceBy(context, 1);
            }
        }
        else {
            // Unquoted
            const match = /^[^\t\r\n\f >]+/.exec(context.source);
            if (!match) {
                return undefined;
            }
            let unexpectedChars = /["'<=`]/g;
            let m;
            while ((m = unexpectedChars.exec(match[0])) !== null) {
                emitError(context, 25 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */, m.index);
            }
            content = parseTextData(context, match[0].length, 4 /* ATTRIBUTE_VALUE */);
        }
        return { content, isQuoted, loc: getSelection(context, start) };
    }
    function parseInterpolation(context, mode) {
        const [open, close] = context.options.delimiters;
        const closeIndex = context.source.indexOf(close, open.length);
        if (closeIndex === -1) {
            emitError(context, 33 /* X_MISSING_INTERPOLATION_END */);
            return undefined;
        }
        const start = getCursor(context);
        advanceBy(context, open.length);
        const innerStart = getCursor(context);
        const innerEnd = getCursor(context);
        const rawContentLength = closeIndex - open.length;
        const rawContent = context.source.slice(0, rawContentLength);
        const preTrimContent = parseTextData(context, rawContentLength, mode);
        const content = preTrimContent.trim();
        const startOffset = preTrimContent.indexOf(content);
        if (startOffset > 0) {
            advancePositionWithMutation(innerStart, rawContent, startOffset);
        }
        const endOffset = rawContentLength - (preTrimContent.length - content.length - startOffset);
        advancePositionWithMutation(innerEnd, rawContent, endOffset);
        advanceBy(context, close.length);
        return {
            type: 5 /* INTERPOLATION */,
            content: {
                type: 4 /* SIMPLE_EXPRESSION */,
                isStatic: false,
                // Set `isConstant` to false by default and will decide in transformExpression
                isConstant: false,
                content,
                loc: getSelection(context, innerStart, innerEnd)
            },
            loc: getSelection(context, start)
        };
    }
    function parseText(context, mode) {
        const endTokens = ['<', context.options.delimiters[0]];
        if (mode === 3 /* CDATA */) {
            endTokens.push(']]>');
        }
        let endIndex = context.source.length;
        for (let i = 0; i < endTokens.length; i++) {
            const index = context.source.indexOf(endTokens[i], 1);
            if (index !== -1 && endIndex > index) {
                endIndex = index;
            }
        }
        const start = getCursor(context);
        const content = parseTextData(context, endIndex, mode);
        return {
            type: 2 /* TEXT */,
            content,
            loc: getSelection(context, start)
        };
    }
    /**
     * Get text data with a given length from the current location.
     * This translates HTML entities in the text data.
     */
    function parseTextData(context, length, mode) {
        let rawText = context.source.slice(0, length);
        if (mode === 2 /* RAWTEXT */ ||
            mode === 3 /* CDATA */ ||
            rawText.indexOf('&') === -1) {
            advanceBy(context, length);
            return rawText;
        }
        // DATA or RCDATA containing "&"". Entity decoding required.
        const end = context.offset + length;
        let decodedText = '';
        function advance(length) {
            advanceBy(context, length);
            rawText = rawText.slice(length);
        }
        while (context.offset < end) {
            const head = /&(?:#x?)?/i.exec(rawText);
            if (!head || context.offset + head.index >= end) {
                const remaining = end - context.offset;
                decodedText += rawText.slice(0, remaining);
                advance(remaining);
                break;
            }
            // Advance to the "&".
            decodedText += rawText.slice(0, head.index);
            advance(head.index);
            if (head[0] === '&') {
                // Named character reference.
                let name = '', value = undefined;
                if (/[0-9a-z]/i.test(rawText[1])) {
                    for (let length = context.options.maxCRNameLength; !value && length > 0; --length) {
                        name = rawText.substr(1, length);
                        value = context.options.namedCharacterReferences[name];
                    }
                    if (value) {
                        const semi = name.endsWith(';');
                        if (mode === 4 /* ATTRIBUTE_VALUE */ &&
                            !semi &&
                            /[=a-z0-9]/i.test(rawText[1 + name.length] || '')) {
                            decodedText += '&' + name;
                            advance(1 + name.length);
                        }
                        else {
                            decodedText += value;
                            advance(1 + name.length);
                            if (!semi) {
                                emitError(context, 18 /* MISSING_SEMICOLON_AFTER_CHARACTER_REFERENCE */);
                            }
                        }
                    }
                    else {
                        emitError(context, 30 /* UNKNOWN_NAMED_CHARACTER_REFERENCE */);
                        decodedText += '&' + name;
                        advance(1 + name.length);
                    }
                }
                else {
                    decodedText += '&';
                    advance(1);
                }
            }
            else {
                // Numeric character reference.
                const hex = head[0] === '&#x';
                const pattern = hex ? /^&#x([0-9a-f]+);?/i : /^&#([0-9]+);?/;
                const body = pattern.exec(rawText);
                if (!body) {
                    decodedText += head[0];
                    emitError(context, 1 /* ABSENCE_OF_DIGITS_IN_NUMERIC_CHARACTER_REFERENCE */);
                    advance(head[0].length);
                }
                else {
                    // https://html.spec.whatwg.org/multipage/parsing.html#numeric-character-reference-end-state
                    let cp = Number.parseInt(body[1], hex ? 16 : 10);
                    if (cp === 0) {
                        emitError(context, 22 /* NULL_CHARACTER_REFERENCE */);
                        cp = 0xfffd;
                    }
                    else if (cp > 0x10ffff) {
                        emitError(context, 3 /* CHARACTER_REFERENCE_OUTSIDE_UNICODE_RANGE */);
                        cp = 0xfffd;
                    }
                    else if (cp >= 0xd800 && cp <= 0xdfff) {
                        emitError(context, 23 /* SURROGATE_CHARACTER_REFERENCE */);
                        cp = 0xfffd;
                    }
                    else if ((cp >= 0xfdd0 && cp <= 0xfdef) || (cp & 0xfffe) === 0xfffe) {
                        emitError(context, 21 /* NONCHARACTER_CHARACTER_REFERENCE */);
                    }
                    else if ((cp >= 0x01 && cp <= 0x08) ||
                        cp === 0x0b ||
                        (cp >= 0x0d && cp <= 0x1f) ||
                        (cp >= 0x7f && cp <= 0x9f)) {
                        emitError(context, 4 /* CONTROL_CHARACTER_REFERENCE */);
                        cp = CCR_REPLACEMENTS[cp] || cp;
                    }
                    decodedText += String.fromCodePoint(cp);
                    advance(body[0].length);
                    if (!body[0].endsWith(';')) {
                        emitError(context, 18 /* MISSING_SEMICOLON_AFTER_CHARACTER_REFERENCE */);
                    }
                }
            }
        }
        return decodedText;
    }
    function getCursor(context) {
        const { column, line, offset } = context;
        return { column, line, offset };
    }
    function getSelection(context, start, end) {
        end = end || getCursor(context);
        return {
            start,
            end,
            source: context.originalSource.slice(start.offset, end.offset)
        };
    }
    function last(xs) {
        return xs[xs.length - 1];
    }
    function startsWith(source, searchString) {
        return source.startsWith(searchString);
    }
    function advanceBy(context, numberOfCharacters) {
        const { source } = context;
        advancePositionWithMutation(context, source, numberOfCharacters);
        context.source = source.slice(numberOfCharacters);
    }
    function advanceSpaces(context) {
        const match = /^[\t\r\n\f ]+/.exec(context.source);
        if (match) {
            advanceBy(context, match[0].length);
        }
    }
    function getNewPosition(context, start, numberOfCharacters) {
        return advancePositionWithClone(start, context.originalSource.slice(start.offset, numberOfCharacters), numberOfCharacters);
    }
    function emitError(context, code, offset, loc = getCursor(context)) {
        if (offset) {
            loc.offset += offset;
            loc.column += offset;
        }
        context.options.onError(createCompilerError(code, {
            start: loc,
            end: loc,
            source: ''
        }));
    }
    function isEnd(context, mode, ancestors) {
        const s = context.source;
        switch (mode) {
            case 0 /* DATA */:
                if (startsWith(s, '</')) {
                    //TODO: probably bad performance
                    for (let i = ancestors.length - 1; i >= 0; --i) {
                        if (startsWithEndTagOpen(s, ancestors[i].tag)) {
                            return true;
                        }
                    }
                }
                break;
            case 1 /* RCDATA */:
            case 2 /* RAWTEXT */: {
                const parent = last(ancestors);
                if (parent && startsWithEndTagOpen(s, parent.tag)) {
                    return true;
                }
                break;
            }
            case 3 /* CDATA */:
                if (startsWith(s, ']]>')) {
                    return true;
                }
                break;
        }
        return !s;
    }
    function startsWithEndTagOpen(source, tag) {
        return (startsWith(source, '</') &&
            source.substr(2, tag.length).toLowerCase() === tag.toLowerCase() &&
            /[\t\n\f />]/.test(source[2 + tag.length] || '>'));
    }
    // https://html.spec.whatwg.org/multipage/parsing.html#numeric-character-reference-end-state
    const CCR_REPLACEMENTS = {
        0x80: 0x20ac,
        0x82: 0x201a,
        0x83: 0x0192,
        0x84: 0x201e,
        0x85: 0x2026,
        0x86: 0x2020,
        0x87: 0x2021,
        0x88: 0x02c6,
        0x89: 0x2030,
        0x8a: 0x0160,
        0x8b: 0x2039,
        0x8c: 0x0152,
        0x8e: 0x017d,
        0x91: 0x2018,
        0x92: 0x2019,
        0x93: 0x201c,
        0x94: 0x201d,
        0x95: 0x2022,
        0x96: 0x2013,
        0x97: 0x2014,
        0x98: 0x02dc,
        0x99: 0x2122,
        0x9a: 0x0161,
        0x9b: 0x203a,
        0x9c: 0x0153,
        0x9e: 0x017e,
        0x9f: 0x0178
    };
  
    function hoistStatic(root, context) {
        walk(root.children, context, new Map(), isSingleElementRoot(root, root.children[0]));
    }
    function isSingleElementRoot(root, child) {
        const { children } = root;
        return (children.length === 1 &&
            child.type === 1 /* ELEMENT */ &&
            !isSlotOutlet(child));
    }
    function walk(children, context, resultCache, doNotHoistNode = false) {
        for (let i = 0; i < children.length; i++) {
            const child = children[i];
            // only plain elements are eligible for hoisting.
            if (child.type === 1 /* ELEMENT */ &&
                child.tagType === 0 /* ELEMENT */) {
                if (!doNotHoistNode && isStaticNode(child, resultCache)) {
                    // whole tree is static
                    child.codegenNode = context.hoist(child.codegenNode);
                    continue;
                }
                else {
                    // node may contain dynamic children, but its props may be eligible for
                    // hoisting.
                    const codegenNode = child.codegenNode;
                    if (codegenNode.type === 13 /* JS_CALL_EXPRESSION */) {
                        const flag = getPatchFlag(codegenNode);
                        if ((!flag ||
                            flag === 32 /* NEED_PATCH */ ||
                            flag === 1 /* TEXT */) &&
                            !hasDynamicKeyOrRef(child) &&
                            !hasCachedProps()) {
                            const props = getNodeProps(child);
                            if (props && props !== `null`) {
                                getVNodeCall(codegenNode).arguments[1] = context.hoist(props);
                            }
                        }
                    }
                }
            }
            if (child.type === 1 /* ELEMENT */) {
                walk(child.children, context, resultCache);
            }
            else if (child.type === 11 /* FOR */) {
                // Do not hoist v-for single child because it has to be a block
                walk(child.children, context, resultCache, child.children.length === 1);
            }
            else if (child.type === 9 /* IF */) {
                for (let i = 0; i < child.branches.length; i++) {
                    const branchChildren = child.branches[i].children;
                    // Do not hoist v-if single child because it has to be a block
                    walk(branchChildren, context, resultCache, branchChildren.length === 1);
                }
            }
        }
    }
    function isStaticNode(node, resultCache = new Map()) {
        switch (node.type) {
            case 1 /* ELEMENT */:
                if (node.tagType !== 0 /* ELEMENT */) {
                    return false;
                }
                const cached = resultCache.get(node);
                if (cached !== undefined) {
                    return cached;
                }
                const codegenNode = node.codegenNode;
                if (codegenNode.type !== 13 /* JS_CALL_EXPRESSION */) {
                    return false;
                }
                const flag = getPatchFlag(codegenNode);
                if (!flag && !hasDynamicKeyOrRef(node) && !hasCachedProps()) {
                    // element self is static. check its children.
                    for (let i = 0; i < node.children.length; i++) {
                        if (!isStaticNode(node.children[i], resultCache)) {
                            resultCache.set(node, false);
                            return false;
                        }
                    }
                    resultCache.set(node, true);
                    return true;
                }
                else {
                    resultCache.set(node, false);
                    return false;
                }
            case 2 /* TEXT */:
            case 3 /* COMMENT */:
                return true;
            case 9 /* IF */:
            case 11 /* FOR */:
                return false;
            case 5 /* INTERPOLATION */:
            case 12 /* TEXT_CALL */:
                return isStaticNode(node.content, resultCache);
            case 4 /* SIMPLE_EXPRESSION */:
                return node.isConstant;
            case 8 /* COMPOUND_EXPRESSION */:
                return node.children.every(child => {
                    return (isString(child) || isSymbol(child) || isStaticNode(child, resultCache));
                });
            default:
                return false;
        }
    }
    function hasDynamicKeyOrRef(node) {
        return !!(findProp(node, 'key', true) || findProp(node, 'ref', true));
    }
    function hasCachedProps(node) {
        {
            return false;
        }
    }
    function getNodeProps(node) {
        const codegenNode = node.codegenNode;
        if (codegenNode.type === 13 /* JS_CALL_EXPRESSION */) {
            return getVNodeArgAt(codegenNode, 1);
        }
    }
    function getVNodeArgAt(node, index) {
        return getVNodeCall(node).arguments[index];
    }
    function getVNodeCall(node) {
        return node.callee === WITH_DIRECTIVES ? node.arguments[0] : node;
    }
    function getPatchFlag(node) {
        const flag = getVNodeArgAt(node, 3);
        return flag ? parseInt(flag, 10) : undefined;
    }
  
    function createTransformContext(root, { prefixIdentifiers = false, hoistStatic = false, cacheHandlers = false, nodeTransforms = [], directiveTransforms = {}, isBuiltInComponent = NOOP, onError = defaultOnError }) {
        const context = {
            // options
            prefixIdentifiers,
            hoistStatic,
            cacheHandlers,
            nodeTransforms,
            directiveTransforms,
            isBuiltInComponent,
            onError,
            // state
            root,
            helpers: new Set(),
            components: new Set(),
            directives: new Set(),
            hoists: [],
            imports: new Set(),
            cached: 0,
            identifiers: {},
            scopes: {
                vFor: 0,
                vSlot: 0,
                vPre: 0,
                vOnce: 0
            },
            parent: null,
            currentNode: root,
            childIndex: 0,
            // methods
            helper(name) {
                context.helpers.add(name);
                return name;
            },
            helperString(name) {
                return ((context.prefixIdentifiers ? `` : `_`) +
                    helperNameMap[context.helper(name)]);
            },
            replaceNode(node) {
                /* istanbul ignore if */
                {
                    if (!context.currentNode) {
                        throw new Error(`Node being replaced is already removed.`);
                    }
                    if (!context.parent) {
                        throw new Error(`Cannot replace root node.`);
                    }
                }
                context.parent.children[context.childIndex] = context.currentNode = node;
            },
            removeNode(node) {
                if ( !context.parent) {
                    throw new Error(`Cannot remove root node.`);
                }
                const list = context.parent.children;
                const removalIndex = node
                    ? list.indexOf(node)
                    : context.currentNode
                        ? context.childIndex
                        : -1;
                /* istanbul ignore if */
                if ( removalIndex < 0) {
                    throw new Error(`node being removed is not a child of current parent`);
                }
                if (!node || node === context.currentNode) {
                    // current node removed
                    context.currentNode = null;
                    context.onNodeRemoved();
                }
                else {
                    // sibling node removed
                    if (context.childIndex > removalIndex) {
                        context.childIndex--;
                        context.onNodeRemoved();
                    }
                }
                context.parent.children.splice(removalIndex, 1);
            },
            onNodeRemoved: () => { },
            addIdentifiers(exp) {
            },
            removeIdentifiers(exp) {
            },
            hoist(exp) {
                context.hoists.push(exp);
                return createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc, true);
            },
            cache(exp, isVNode = false) {
                return createCacheExpression(++context.cached, exp, isVNode);
            }
        };
        return context;
    }
    function transform(root, options) {
        const context = createTransformContext(root, options);
        traverseNode(root, context);
        if (options.hoistStatic) {
            hoistStatic(root, context);
        }
        finalizeRoot(root, context);
    }
    function finalizeRoot(root, context) {
        const { helper } = context;
        const { children } = root;
        const child = children[0];
        if (children.length === 1) {
            // if the single child is an element, turn it into a block.
            if (isSingleElementRoot(root, child) && child.codegenNode) {
                // single element root is never hoisted so codegenNode will never be
                // SimpleExpressionNode
                const codegenNode = child.codegenNode;
                if (codegenNode.type !== 20 /* JS_CACHE_EXPRESSION */) {
                    if (codegenNode.callee === WITH_DIRECTIVES) {
                        codegenNode.arguments[0].callee = helper(CREATE_BLOCK);
                    }
                    else {
                        codegenNode.callee = helper(CREATE_BLOCK);
                    }
                    root.codegenNode = createBlockExpression(codegenNode, context);
                }
                else {
                    root.codegenNode = codegenNode;
                }
            }
            else {
                // - single <slot/>, IfNode, ForNode: already blocks.
                // - single text node: always patched.
                // root codegen falls through via genNode()
                root.codegenNode = child;
            }
        }
        else if (children.length > 1) {
            // root has multiple nodes - return a fragment block.
            root.codegenNode = createBlockExpression(createCallExpression(helper(CREATE_BLOCK), [
                helper(FRAGMENT),
                `null`,
                root.children,
                `${64 /* STABLE_FRAGMENT */} /* ${PatchFlagNames[64 /* STABLE_FRAGMENT */]} */`
            ]), context);
        }
        // finalize meta information
        root.helpers = [...context.helpers];
        root.components = [...context.components];
        root.directives = [...context.directives];
        root.imports = [...context.imports];
        root.hoists = context.hoists;
        root.cached = context.cached;
    }
    function traverseChildren(parent, context) {
        let i = 0;
        const nodeRemoved = () => {
            i--;
        };
        for (; i < parent.children.length; i++) {
            const child = parent.children[i];
            if (isString(child))
                continue;
            context.currentNode = child;
            context.parent = parent;
            context.childIndex = i;
            context.onNodeRemoved = nodeRemoved;
            traverseNode(child, context);
        }
    }
    function traverseNode(node, context) {
        // apply transform plugins
        const { nodeTransforms } = context;
        const exitFns = [];
        for (let i = 0; i < nodeTransforms.length; i++) {
            const onExit = nodeTransforms[i](node, context);
            if (onExit) {
                if (isArray(onExit)) {
                    exitFns.push(...onExit);
                }
                else {
                    exitFns.push(onExit);
                }
            }
            if (!context.currentNode) {
                // node was removed
                return;
            }
            else {
                // node may have been replaced
                node = context.currentNode;
            }
        }
        switch (node.type) {
            case 3 /* COMMENT */:
                // inject import for the Comment symbol, which is needed for creating
                // comment nodes with `createVNode`
                context.helper(CREATE_COMMENT);
                break;
            case 5 /* INTERPOLATION */:
                // no need to traverse, but we need to inject toString helper
                context.helper(TO_STRING);
                break;
            // for container types, further traverse downwards
            case 9 /* IF */:
                for (let i = 0; i < node.branches.length; i++) {
                    traverseChildren(node.branches[i], context);
                }
                break;
            case 11 /* FOR */:
            case 1 /* ELEMENT */:
            case 0 /* ROOT */:
                traverseChildren(node, context);
                break;
        }
        // exit transforms
        let i = exitFns.length;
        while (i--) {
            exitFns[i]();
        }
    }
    function createStructuralDirectiveTransform(name, fn) {
        const matches = isString(name)
            ? (n) => n === name
            : (n) => name.test(n);
        return (node, context) => {
            if (node.type === 1 /* ELEMENT */) {
                const { props } = node;
                // structural directive transforms are not concerned with slots
                // as they are handled separately in vSlot.ts
                if (node.tagType === 3 /* TEMPLATE */ && props.some(isVSlot)) {
                    return;
                }
                const exitFns = [];
                for (let i = 0; i < props.length; i++) {
                    const prop = props[i];
                    if (prop.type === 7 /* DIRECTIVE */ && matches(prop.name)) {
                        // structural directives are removed to avoid infinite recursion
                        // also we remove them *before* applying so that it can further
                        // traverse itself in case it moves the node around
                        props.splice(i, 1);
                        i--;
                        const onExit = fn(node, prop, context);
                        if (onExit)
                            exitFns.push(onExit);
                    }
                }
                return exitFns;
            }
        };
    }
  
    function createCodegenContext(ast, { mode = 'function', prefixIdentifiers = mode === 'module', sourceMap = false, filename = `template.vue.html`, scopeId = null }) {
        const context = {
            mode,
            prefixIdentifiers,
            sourceMap,
            filename,
            scopeId,
            source: ast.loc.source,
            code: ``,
            column: 1,
            line: 1,
            offset: 0,
            indentLevel: 0,
            map: undefined,
            helper(key) {
                const name = helperNameMap[key];
                return prefixIdentifiers ? name : `_${name}`;
            },
            push(code, node) {
                context.code += code;
            },
            indent() {
                newline(++context.indentLevel);
            },
            deindent(withoutNewLine = false) {
                if (withoutNewLine) {
                    --context.indentLevel;
                }
                else {
                    newline(--context.indentLevel);
                }
            },
            newline() {
                newline(context.indentLevel);
            }
        };
        function newline(n) {
            context.push('\n' + `  `.repeat(n));
        }
        return context;
    }
    function generate(ast, options = {}) {
        const context = createCodegenContext(ast, options);
        const { mode, push, helper, prefixIdentifiers, indent, deindent, newline, scopeId } = context;
        const hasHelpers = ast.helpers.length > 0;
        const useWithBlock = !prefixIdentifiers && mode !== 'module';
        // preambles
        if (mode === 'function') {
            // Generate const declaration for helpers
            // In prefix mode, we place the const declaration at top so it's done
            // only once; But if we not prefixing, we place the declaration inside the
            // with block so it doesn't incur the `in` check cost for every helper access.
            if (hasHelpers) {
                if (prefixIdentifiers) {
                    push(`const { ${ast.helpers.map(helper).join(', ')} } = Vue\n`);
                }
                else {
                    // "with" mode.
                    // save Vue in a separate variable to avoid collision
                    push(`const _Vue = Vue\n`);
                    // in "with" mode, helpers are declared inside the with block to avoid
                    // has check cost, but hoists are lifted out of the function - we need
                    // to provide the helper here.
                    if (ast.hoists.length) {
                        const staticHelpers = [CREATE_VNODE, CREATE_COMMENT, CREATE_TEXT]
                            .filter(helper => ast.helpers.includes(helper))
                            .map(s => `${helperNameMap[s]}: _${helperNameMap[s]}`)
                            .join(', ');
                        push(`const { ${staticHelpers} } = Vue\n`);
                    }
                }
            }
            genHoists(ast.hoists, context);
            newline();
            push(`return `);
        }
        else {
            if (hasHelpers) {
                push(`import { ${ast.helpers.map(helper).join(', ')} } from "vue"\n`);
            }
            if (ast.imports.length) {
                genImports(ast.imports, context);
                newline();
            }
            genHoists(ast.hoists, context);
            newline();
            push(`export `);
        }
        push(`function render() {`);
        indent();
        if (useWithBlock) {
            push(`with (this) {`);
            indent();
            // function mode const declarations should be inside with block
            // also they should be renamed to avoid collision with user properties
            if (hasHelpers) {
                push(`const { ${ast.helpers
                  .map(s => `${helperNameMap[s]}: _${helperNameMap[s]}`)
                  .join(', ')} } = _Vue`);
                newline();
                if (ast.cached > 0) {
                    push(`const _cache = $cache`);
                    newline();
                }
                newline();
            }
        }
        else {
            push(`const _ctx = this`);
            if (ast.cached > 0) {
                newline();
                push(`const _cache = _ctx.$cache`);
            }
            newline();
        }
        // generate asset resolution statements
        if (ast.components.length) {
            genAssets(ast.components, 'component', context);
        }
        if (ast.directives.length) {
            genAssets(ast.directives, 'directive', context);
        }
        if (ast.components.length || ast.directives.length) {
            newline();
        }
        // generate the VNode tree expression
        push(`return `);
        if (ast.codegenNode) {
            genNode(ast.codegenNode, context);
        }
        else {
            push(`null`);
        }
        if (useWithBlock) {
            deindent();
            push(`}`);
        }
        deindent();
        push(`}`);
        return {
            ast,
            code: context.code,
            // SourceMapGenerator does have toJSON() method but it's not in the types
            map: context.map ? context.map.toJSON() : undefined
        };
    }
    function genAssets(assets, type, context) {
        const resolver = context.helper(type === 'component' ? RESOLVE_COMPONENT : RESOLVE_DIRECTIVE);
        for (let i = 0; i < assets.length; i++) {
            const id = assets[i];
            context.push(`const ${toValidAssetId(id, type)} = ${resolver}(${JSON.stringify(id)})`);
            context.newline();
        }
    }
    function genHoists(hoists, context) {
        if (!hoists.length) {
            return;
        }
        const { push, newline, helper, scopeId, mode } = context;
        newline();
        hoists.forEach((exp, i) => {
            push(`const _hoisted_${i + 1} = `);
            genNode(exp, context);
            newline();
        });
    }
    function genImports(importsOptions, context) {
        if (!importsOptions.length) {
            return;
        }
        importsOptions.forEach(imports => {
            context.push(`import `);
            genNode(imports.exp, context);
            context.push(` from '${imports.path}'`);
            context.newline();
        });
    }
    function isText(n) {
        return (isString(n) ||
            n.type === 4 /* SIMPLE_EXPRESSION */ ||
            n.type === 2 /* TEXT */ ||
            n.type === 5 /* INTERPOLATION */ ||
            n.type === 8 /* COMPOUND_EXPRESSION */);
    }
    function genNodeListAsArray(nodes, context) {
        const multilines = nodes.length > 3 ||
            ( nodes.some(n => isArray(n) || !isText(n)));
        context.push(`[`);
        multilines && context.indent();
        genNodeList(nodes, context, multilines);
        multilines && context.deindent();
        context.push(`]`);
    }
    function genNodeList(nodes, context, multilines = false) {
        const { push, newline } = context;
        for (let i = 0; i < nodes.length; i++) {
            const node = nodes[i];
            if (isString(node)) {
                push(node);
            }
            else if (isArray(node)) {
                genNodeListAsArray(node, context);
            }
            else {
                genNode(node, context);
            }
            if (i < nodes.length - 1) {
                if (multilines) {
                    push(',');
                    newline();
                }
                else {
                    push(', ');
                }
            }
        }
    }
    function genNode(node, context) {
        if (isString(node)) {
            context.push(node);
            return;
        }
        if (isSymbol(node)) {
            context.push(context.helper(node));
            return;
        }
        switch (node.type) {
            case 1 /* ELEMENT */:
            case 9 /* IF */:
            case 11 /* FOR */:
                
                    assert(node.codegenNode != null, `Codegen node is missing for element/if/for node. ` +
                        `Apply appropriate transforms first.`);
                genNode(node.codegenNode, context);
                break;
            case 2 /* TEXT */:
                genText(node, context);
                break;
            case 4 /* SIMPLE_EXPRESSION */:
                genExpression(node, context);
                break;
            case 5 /* INTERPOLATION */:
                genInterpolation(node, context);
                break;
            case 12 /* TEXT_CALL */:
                genNode(node.codegenNode, context);
                break;
            case 8 /* COMPOUND_EXPRESSION */:
                genCompoundExpression(node, context);
                break;
            case 3 /* COMMENT */:
                genComment(node, context);
                break;
            case 13 /* JS_CALL_EXPRESSION */:
                genCallExpression(node, context);
                break;
            case 14 /* JS_OBJECT_EXPRESSION */:
                genObjectExpression(node, context);
                break;
            case 16 /* JS_ARRAY_EXPRESSION */:
                genArrayExpression(node, context);
                break;
            case 17 /* JS_FUNCTION_EXPRESSION */:
                genFunctionExpression(node, context);
                break;
            case 18 /* JS_SEQUENCE_EXPRESSION */:
                genSequenceExpression(node, context);
                break;
            case 19 /* JS_CONDITIONAL_EXPRESSION */:
                genConditionalExpression(node, context);
                break;
            case 20 /* JS_CACHE_EXPRESSION */:
                genCacheExpression(node, context);
                break;
            /* istanbul ignore next */
            default:
                {
                    assert(false, `unhandled codegen node type: ${node.type}`);
                    // make sure we exhaust all possible types
                    const exhaustiveCheck = node;
                    return exhaustiveCheck;
                }
        }
    }
    function genText(node, context) {
        context.push(JSON.stringify(node.content), node);
    }
    function genExpression(node, context) {
        const { content, isStatic } = node;
        context.push(isStatic ? JSON.stringify(content) : content, node);
    }
    function genInterpolation(node, context) {
        const { push, helper } = context;
        push(`${helper(TO_STRING)}(`);
        genNode(node.content, context);
        push(`)`);
    }
    function genCompoundExpression(node, context) {
        for (let i = 0; i < node.children.length; i++) {
            const child = node.children[i];
            if (isString(child)) {
                context.push(child);
            }
            else {
                genNode(child, context);
            }
        }
    }
    function genExpressionAsPropertyKey(node, context) {
        const { push } = context;
        if (node.type === 8 /* COMPOUND_EXPRESSION */) {
            push(`[`);
            genCompoundExpression(node, context);
            push(`]`);
        }
        else if (node.isStatic) {
            // only quote keys if necessary
            const text = isSimpleIdentifier(node.content)
                ? node.content
                : JSON.stringify(node.content);
            push(text, node);
        }
        else {
            push(`[${node.content}]`, node);
        }
    }
    function genComment(node, context) {
        {
            const { push, helper } = context;
            push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);
        }
    }
    // JavaScript
    function genCallExpression(node, context) {
        const callee = isString(node.callee)
            ? node.callee
            : context.helper(node.callee);
        context.push(callee + `(`, node);
        genNodeList(node.arguments, context);
        context.push(`)`);
    }
    function genObjectExpression(node, context) {
        const { push, indent, deindent, newline } = context;
        const { properties } = node;
        if (!properties.length) {
            push(`{}`, node);
            return;
        }
        const multilines = properties.length > 1 ||
            (
                properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));
        push(multilines ? `{` : `{ `);
        multilines && indent();
        for (let i = 0; i < properties.length; i++) {
            const { key, value } = properties[i];
            // key
            genExpressionAsPropertyKey(key, context);
            push(`: `);
            // value
            genNode(value, context);
            if (i < properties.length - 1) {
                // will only reach this if it's multilines
                push(`,`);
                newline();
            }
        }
        multilines && deindent();
        push(multilines ? `}` : ` }`);
    }
    function genArrayExpression(node, context) {
        genNodeListAsArray(node.elements, context);
    }
    function genFunctionExpression(node, context) {
        const { push, indent, deindent, scopeId, mode } = context;
        const { params, returns, newline, isSlot } = node;
        push(`(`, node);
        if (isArray(params)) {
            genNodeList(params, context);
        }
        else if (params) {
            genNode(params, context);
        }
        push(`) => `);
        if (newline) {
            push(`{`);
            indent();
            push(`return `);
        }
        if (isArray(returns)) {
            genNodeListAsArray(returns, context);
        }
        else {
            genNode(returns, context);
        }
        if (newline) {
            deindent();
            push(`}`);
        }
    }
    function genConditionalExpression(node, context) {
        const { test, consequent, alternate } = node;
        const { push, indent, deindent, newline } = context;
        if (test.type === 4 /* SIMPLE_EXPRESSION */) {
            const needsParens = !isSimpleIdentifier(test.content);
            needsParens && push(`(`);
            genExpression(test, context);
            needsParens && push(`)`);
        }
        else {
            push(`(`);
            genCompoundExpression(test, context);
            push(`)`);
        }
        indent();
        context.indentLevel++;
        push(`? `);
        genNode(consequent, context);
        context.indentLevel--;
        newline();
        push(`: `);
        const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;
        if (!isNested) {
            context.indentLevel++;
        }
        genNode(alternate, context);
        if (!isNested) {
            context.indentLevel--;
        }
        deindent(true /* without newline */);
    }
    function genSequenceExpression(node, context) {
        context.push(`(`);
        genNodeList(node.expressions, context);
        context.push(`)`);
    }
    function genCacheExpression(node, context) {
        const { push, helper, indent, deindent, newline } = context;
        push(`_cache[${node.index}] || (`);
        if (node.isVNode) {
            indent();
            push(`${helper(SET_BLOCK_TRACKING)}(-1),`);
            newline();
        }
        push(`_cache[${node.index}] = `);
        genNode(node.value, context);
        if (node.isVNode) {
            push(`,`);
            newline();
            push(`${helper(SET_BLOCK_TRACKING)}(1),`);
            newline();
            push(`_cache[${node.index}]`);
            deindent();
        }
        push(`)`);
    }
  
    const transformIf = createStructuralDirectiveTransform(/^(if|else|else-if)$/, (node, dir, context) => {
        if (dir.name !== 'else' &&
            (!dir.exp || !dir.exp.content.trim())) {
            const loc = dir.exp ? dir.exp.loc : node.loc;
            context.onError(createCompilerError(35 /* X_V_IF_NO_EXPRESSION */, dir.loc));
            dir.exp = createSimpleExpression(`true`, false, loc);
        }
        if (dir.name === 'if') {
            const branch = createIfBranch(node, dir);
            const codegenNode = createSequenceExpression([
                createCallExpression(context.helper(OPEN_BLOCK))
            ]);
            context.replaceNode({
                type: 9 /* IF */,
                loc: node.loc,
                branches: [branch],
                codegenNode
            });
            // Exit callback. Complete the codegenNode when all children have been
            // transformed.
            return () => {
                codegenNode.expressions.push(createCodegenNodeForBranch(branch, 0, context));
            };
        }
        else {
            // locate the adjacent v-if
            const siblings = context.parent.children;
            const comments = [];
            let i = siblings.indexOf(node);
            while (i-- >= -1) {
                const sibling = siblings[i];
                if ( sibling && sibling.type === 3 /* COMMENT */) {
                    context.removeNode(sibling);
                    comments.unshift(sibling);
                    continue;
                }
                if (sibling && sibling.type === 9 /* IF */) {
                    // move the node to the if node's branches
                    context.removeNode();
                    const branch = createIfBranch(node, dir);
                    if ( comments.length) {
                        branch.children = [...comments, ...branch.children];
                    }
                    sibling.branches.push(branch);
                    // since the branch was removed, it will not be traversed.
                    // make sure to traverse here.
                    traverseChildren(branch, context);
                    // make sure to reset currentNode after traversal to indicate this
                    // node has been removed.
                    context.currentNode = null;
                    // attach this branch's codegen node to the v-if root.
                    let parentCondition = sibling.codegenNode
                        .expressions[1];
                    while (true) {
                        if (parentCondition.alternate.type ===
                            19 /* JS_CONDITIONAL_EXPRESSION */) {
                            parentCondition = parentCondition.alternate;
                        }
                        else {
                            parentCondition.alternate = createCodegenNodeForBranch(branch, sibling.branches.length - 1, context);
                            break;
                        }
                    }
                }
                else {
                    context.onError(createCompilerError(36 /* X_V_ELSE_NO_ADJACENT_IF */, node.loc));
                }
                break;
            }
        }
    });
    function createIfBranch(node, dir) {
        return {
            type: 10 /* IF_BRANCH */,
            loc: node.loc,
            condition: dir.name === 'else' ? undefined : dir.exp,
            children: node.tagType === 3 /* TEMPLATE */ ? node.children : [node]
        };
    }
    function createCodegenNodeForBranch(branch, index, context) {
        if (branch.condition) {
            return createConditionalExpression(branch.condition, createChildrenCodegenNode(branch, index, context), 
            // make sure to pass in asBlock: true so that the comment node call
            // closes the current block.
            createCallExpression(context.helper(CREATE_COMMENT), [
                 '"v-if"' ,
                'true'
            ]));
        }
        else {
            return createChildrenCodegenNode(branch, index, context);
        }
    }
    function createChildrenCodegenNode(branch, index, context) {
        const { helper } = context;
        const keyProperty = createObjectProperty(`key`, createSimpleExpression(index + '', false));
        const { children } = branch;
        const child = children[0];
        const needFragmentWrapper = children.length !== 1 || child.type !== 1 /* ELEMENT */;
        if (needFragmentWrapper) {
            const blockArgs = [
                helper(FRAGMENT),
                createObjectExpression([keyProperty]),
                children
            ];
            if (children.length === 1 && child.type === 11 /* FOR */) {
                // optimize away nested fragments when child is a ForNode
                const forBlockArgs = child.codegenNode.expressions[1].arguments;
                // directly use the for block's children and patchFlag
                blockArgs[2] = forBlockArgs[2];
                blockArgs[3] = forBlockArgs[3];
            }
            return createCallExpression(helper(CREATE_BLOCK), blockArgs);
        }
        else {
            const childCodegen = child.codegenNode;
            let vnodeCall = childCodegen;
            // Element with custom directives. Locate the actual createVNode() call.
            if (vnodeCall.callee === WITH_DIRECTIVES) {
                vnodeCall = vnodeCall.arguments[0];
            }
            // Change createVNode to createBlock.
            if (vnodeCall.callee === CREATE_VNODE) {
                vnodeCall.callee = helper(CREATE_BLOCK);
            }
            // inject branch key
            injectProp(vnodeCall, keyProperty, context);
            return childCodegen;
        }
    }
  
    const transformFor = createStructuralDirectiveTransform('for', (node, dir, context) => {
        if (!dir.exp) {
            context.onError(createCompilerError(37 /* X_V_FOR_NO_EXPRESSION */, dir.loc));
            return;
        }
        const parseResult = parseForExpression(
        // can only be simple expression because vFor transform is applied
        // before expression transform.
        dir.exp);
        if (!parseResult) {
            context.onError(createCompilerError(38 /* X_V_FOR_MALFORMED_EXPRESSION */, dir.loc));
            return;
        }
        const { helper, addIdentifiers, removeIdentifiers, scopes } = context;
        const { source, value, key, index } = parseResult;
        // create the loop render function expression now, and add the
        // iterator on exit after all children have been traversed
        const renderExp = createCallExpression(helper(RENDER_LIST), [source]);
        const keyProp = findProp(node, `key`);
        const fragmentFlag = keyProp
            ? 128 /* KEYED_FRAGMENT */
            : 256 /* UNKEYED_FRAGMENT */;
        const codegenNode = createSequenceExpression([
            // fragment blocks disable tracking since they always diff their children
            createCallExpression(helper(OPEN_BLOCK), [`false`]),
            createCallExpression(helper(CREATE_BLOCK), [
                helper(FRAGMENT),
                `null`,
                renderExp,
                `${fragmentFlag} /* ${PatchFlagNames[fragmentFlag]} */`
            ])
        ]);
        context.replaceNode({
            type: 11 /* FOR */,
            loc: dir.loc,
            source,
            valueAlias: value,
            keyAlias: key,
            objectIndexAlias: index,
            children: node.tagType === 3 /* TEMPLATE */ ? node.children : [node],
            codegenNode
        });
        // bookkeeping
        scopes.vFor++;
        return () => {
            scopes.vFor--;
            // finish the codegen now that all children have been traversed
            let childBlock;
            const isTemplate = isTemplateNode(node);
            const slotOutlet = isSlotOutlet(node)
                ? node
                : isTemplate &&
                    node.children.length === 1 &&
                    isSlotOutlet(node.children[0])
                    ? node.children[0] // api-extractor somehow fails to infer this
                    : null;
            const keyProperty = keyProp
                ? createObjectProperty(`key`, keyProp.type === 6 /* ATTRIBUTE */
                    ? createSimpleExpression(keyProp.value.content, true)
                    : keyProp.exp)
                : null;
            if (slotOutlet) {
                // <slot v-for="..."> or <template v-for="..."><slot/></template>
                childBlock = slotOutlet.codegenNode;
                if (isTemplate && keyProperty) {
                    // <template v-for="..." :key="..."><slot/></template>
                    // we need to inject the key to the renderSlot() call.
                    // the props for renderSlot is passed as the 3rd argument.
                    injectProp(childBlock, keyProperty, context);
                }
            }
            else if (isTemplate) {
                // <template v-for="...">
                // should generate a fragment block for each loop
                childBlock = createBlockExpression(createCallExpression(helper(CREATE_BLOCK), [
                    helper(FRAGMENT),
                    keyProperty ? createObjectExpression([keyProperty]) : `null`,
                    node.children,
                    `${64 /* STABLE_FRAGMENT */} /* ${PatchFlagNames[64 /* STABLE_FRAGMENT */]} */`
                ]), context);
            }
            else {
                // Normal element v-for. Directly use the child's codegenNode
                // arguments, but replace createVNode() with createBlock()
                let codegenNode = node.codegenNode;
                if (codegenNode.callee === WITH_DIRECTIVES) {
                    codegenNode.arguments[0].callee = helper(CREATE_BLOCK);
                }
                else {
                    codegenNode.callee = helper(CREATE_BLOCK);
                }
                childBlock = createBlockExpression(codegenNode, context);
            }
            renderExp.arguments.push(createFunctionExpression(createForLoopParams(parseResult), childBlock, true /* force newline */));
        };
    });
    const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
    // This regex doesn't cover the case if key or index aliases have destructuring,
    // but those do not make sense in the first place, so this works in practice.
    const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
    const stripParensRE = /^\(|\)$/g;
    function parseForExpression(input, context) {
        const loc = input.loc;
        const exp = input.content;
        const inMatch = exp.match(forAliasRE);
        if (!inMatch)
            return;
        const [, LHS, RHS] = inMatch;
        const result = {
            source: createAliasExpression(loc, RHS.trim(), exp.indexOf(RHS, LHS.length)),
            value: undefined,
            key: undefined,
            index: undefined
        };
        let valueContent = LHS.trim()
            .replace(stripParensRE, '')
            .trim();
        const trimmedOffset = LHS.indexOf(valueContent);
        const iteratorMatch = valueContent.match(forIteratorRE);
        if (iteratorMatch) {
            valueContent = valueContent.replace(forIteratorRE, '').trim();
            const keyContent = iteratorMatch[1].trim();
            let keyOffset;
            if (keyContent) {
                keyOffset = exp.indexOf(keyContent, trimmedOffset + valueContent.length);
                result.key = createAliasExpression(loc, keyContent, keyOffset);
            }
            if (iteratorMatch[2]) {
                const indexContent = iteratorMatch[2].trim();
                if (indexContent) {
                    result.index = createAliasExpression(loc, indexContent, exp.indexOf(indexContent, result.key
                        ? keyOffset + keyContent.length
                        : trimmedOffset + valueContent.length));
                }
            }
        }
        if (valueContent) {
            result.value = createAliasExpression(loc, valueContent, trimmedOffset);
        }
        return result;
    }
    function createAliasExpression(range, content, offset) {
        return createSimpleExpression(content, false, getInnerRange(range, offset, content.length));
    }
    function createForLoopParams({ value, key, index }) {
        const params = [];
        if (value) {
            params.push(value);
        }
        if (key) {
            if (!value) {
                params.push(createSimpleExpression(`_`, false));
            }
            params.push(key);
        }
        if (index) {
            if (!key) {
                if (!value) {
                    params.push(createSimpleExpression(`_`, false));
                }
                params.push(createSimpleExpression(`__`, false));
            }
            params.push(index);
        }
        return params;
    }
  
    const isStaticExp = (p) => p.type === 4 /* SIMPLE_EXPRESSION */ && p.isStatic;
    const defaultFallback = createSimpleExpression(`undefined`, false);
    // A NodeTransform that:
    // 1. Tracks scope identifiers for scoped slots so that they don't get prefixed
    //    by transformExpression. This is only applied in non-browser builds with
    //    { prefixIdentifiers: true }.
    // 2. Track v-slot depths so that we know a slot is inside another slot.
    //    Note the exit callback is executed before buildSlots() on the same node,
    //    so only nested slots see positive numbers.
    const trackSlotScopes = (node, context) => {
        if (node.type === 1 /* ELEMENT */ &&
            (node.tagType === 1 /* COMPONENT */ ||
                node.tagType === 3 /* TEMPLATE */)) {
            // We are only checking non-empty v-slot here
            // since we only care about slots that introduce scope variables.
            const vSlot = findDir(node, 'slot');
            if (vSlot) {
                const slotProps = vSlot.exp;
                context.scopes.vSlot++;
                return () => {
                    context.scopes.vSlot--;
                };
            }
        }
    };
    // Instead of being a DirectiveTransform, v-slot processing is called during
    // transformElement to build the slots object for a component.
    function buildSlots(node, context) {
        const { children, loc } = node;
        const slotsProperties = [];
        const dynamicSlots = [];
        // If the slot is inside a v-for or another v-slot, force it to be dynamic
        // since it likely uses a scope variable.
        let hasDynamicSlots = context.scopes.vSlot > 0 || context.scopes.vFor > 0;
        // 1. Check for default slot with slotProps on component itself.
        //    <Comp v-slot="{ prop }"/>
        const explicitDefaultSlot = findDir(node, 'slot', true);
        if (explicitDefaultSlot) {
            const { arg, exp, loc } = explicitDefaultSlot;
            if (arg) {
                context.onError(createCompilerError(42 /* X_V_SLOT_NAMED_SLOT_ON_COMPONENT */, loc));
            }
            slotsProperties.push(buildDefaultSlot(exp, children, loc));
        }
        // 2. Iterate through children and check for template slots
        //    <template v-slot:foo="{ prop }">
        let hasTemplateSlots = false;
        let extraneousChild = undefined;
        const seenSlotNames = new Set();
        for (let i = 0; i < children.length; i++) {
            const slotElement = children[i];
            let slotDir;
            if (!isTemplateNode(slotElement) ||
                !(slotDir = findDir(slotElement, 'slot', true))) {
                // not a <template v-slot>, skip.
                if (slotElement.type !== 3 /* COMMENT */ && !extraneousChild) {
                    extraneousChild = slotElement;
                }
                continue;
            }
            if (explicitDefaultSlot) {
                // already has on-component default slot - this is incorrect usage.
                context.onError(createCompilerError(43 /* X_V_SLOT_MIXED_SLOT_USAGE */, slotDir.loc));
                break;
            }
            hasTemplateSlots = true;
            const { children: slotChildren, loc: slotLoc } = slotElement;
            const { arg: slotName = createSimpleExpression(`default`, true), exp: slotProps, loc: dirLoc } = slotDir;
            // check if name is dynamic.
            let staticSlotName;
            if (isStaticExp(slotName)) {
                staticSlotName = slotName ? slotName.content : `default`;
            }
            else {
                hasDynamicSlots = true;
            }
            const slotFunction = createFunctionExpression(slotProps, slotChildren, false /* newline */, true /* isSlot */, slotChildren.length ? slotChildren[0].loc : slotLoc);
            // check if this slot is conditional (v-if/v-for)
            let vIf;
            let vElse;
            let vFor;
            if ((vIf = findDir(slotElement, 'if'))) {
                hasDynamicSlots = true;
                dynamicSlots.push(createConditionalExpression(vIf.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback));
            }
            else if ((vElse = findDir(slotElement, /^else(-if)?$/, true /* allowEmpty */))) {
                // find adjacent v-if
                let j = i;
                let prev;
                while (j--) {
                    prev = children[j];
                    if (prev.type !== 3 /* COMMENT */) {
                        break;
                    }
                }
                if (prev && isTemplateNode(prev) && findDir(prev, 'if')) {
                    // remove node
                    children.splice(i, 1);
                    i--;
                    // attach this slot to previous conditional
                    let conditional = dynamicSlots[dynamicSlots.length - 1];
                    while (conditional.alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
                        conditional = conditional.alternate;
                    }
                    conditional.alternate = vElse.exp
                        ? createConditionalExpression(vElse.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback)
                        : buildDynamicSlot(slotName, slotFunction);
                }
                else {
                    context.onError(createCompilerError(36 /* X_V_ELSE_NO_ADJACENT_IF */, vElse.loc));
                }
            }
            else if ((vFor = findDir(slotElement, 'for'))) {
                hasDynamicSlots = true;
                const parseResult = vFor.parseResult ||
                    parseForExpression(vFor.exp);
                if (parseResult) {
                    // Render the dynamic slots as an array and add it to the createSlot()
                    // args. The runtime knows how to handle it appropriately.
                    dynamicSlots.push(createCallExpression(context.helper(RENDER_LIST), [
                        parseResult.source,
                        createFunctionExpression(createForLoopParams(parseResult), buildDynamicSlot(slotName, slotFunction), true /* force newline */)
                    ]));
                }
                else {
                    context.onError(createCompilerError(38 /* X_V_FOR_MALFORMED_EXPRESSION */, vFor.loc));
                }
            }
            else {
                // check duplicate static names
                if (staticSlotName) {
                    if (seenSlotNames.has(staticSlotName)) {
                        context.onError(createCompilerError(44 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */, dirLoc));
                        continue;
                    }
                    seenSlotNames.add(staticSlotName);
                }
                slotsProperties.push(createObjectProperty(slotName, slotFunction));
            }
        }
        if (hasTemplateSlots && extraneousChild) {
            context.onError(createCompilerError(45 /* X_V_SLOT_EXTRANEOUS_NON_SLOT_CHILDREN */, extraneousChild.loc));
        }
        if (!explicitDefaultSlot && !hasTemplateSlots) {
            // implicit default slot.
            slotsProperties.push(buildDefaultSlot(undefined, children, loc));
        }
        let slots = createObjectExpression(slotsProperties.concat(createObjectProperty(`_compiled`, createSimpleExpression(`true`, false))), loc);
        if (dynamicSlots.length) {
            slots = createCallExpression(context.helper(CREATE_SLOTS), [
                slots,
                createArrayExpression(dynamicSlots)
            ]);
        }
        return {
            slots,
            hasDynamicSlots
        };
    }
    function buildDefaultSlot(slotProps, children, loc) {
        return createObjectProperty(`default`, createFunctionExpression(slotProps, children, false /* newline */, true /* isSlot */, children.length ? children[0].loc : loc));
    }
    function buildDynamicSlot(name, fn) {
        return createObjectExpression([
            createObjectProperty(`name`, name),
            createObjectProperty(`fn`, fn)
        ]);
    }
  
    // some directive transforms (e.g. v-model) may return a symbol for runtime
    // import, which should be used instead of a resolveDirective call.
    const directiveImportMap = new WeakMap();
    // generate a JavaScript AST for this element's codegen
    const transformElement = (node, context) => {
        if (node.type !== 1 /* ELEMENT */ ||
            // handled by transformSlotOutlet
            node.tagType === 2 /* SLOT */ ||
            // <template v-if/v-for> should have already been replaced
            // <template v-slot> is handled by buildSlots
            (node.tagType === 3 /* TEMPLATE */ && node.props.some(isVSlot))) {
            return;
        }
        // perform the work on exit, after all child expressions have been
        // processed and merged.
        return function postTransformElement() {
            const { tag, tagType, props } = node;
            const builtInComponentSymbol = isCoreComponent(tag) || context.isBuiltInComponent(tag);
            const isComponent = tagType === 1 /* COMPONENT */;
            let hasProps = props.length > 0;
            let patchFlag = 0;
            let runtimeDirectives;
            let dynamicPropNames;
            let dynamicComponent;
            // handle dynamic component
            const isProp = findProp(node, 'is');
            if (tag === 'component') {
                if (isProp) {
                    // static <component is="foo" />
                    if (isProp.type === 6 /* ATTRIBUTE */) {
                        const tag = isProp.value && isProp.value.content;
                        if (tag) {
                            context.helper(RESOLVE_COMPONENT);
                            context.components.add(tag);
                            dynamicComponent = toValidAssetId(tag, `component`);
                        }
                    }
                    // dynamic <component :is="asdf" />
                    else if (isProp.exp) {
                        dynamicComponent = createCallExpression(context.helper(RESOLVE_DYNAMIC_COMPONENT), 
                        // _ctx.$ exposes the owner instance of current render function
                        [isProp.exp, context.prefixIdentifiers ? `_ctx.$` : `$`]);
                    }
                }
            }
            let nodeType;
            if (dynamicComponent) {
                nodeType = dynamicComponent;
            }
            else if (builtInComponentSymbol) {
                nodeType = context.helper(builtInComponentSymbol);
            }
            else if (isComponent) {
                // user component w/ resolve
                context.helper(RESOLVE_COMPONENT);
                context.components.add(tag);
                nodeType = toValidAssetId(tag, `component`);
            }
            else {
                // plain element
                nodeType = `"${node.tag}"`;
            }
            const args = [nodeType];
            // props
            if (hasProps) {
                const propsBuildResult = buildProps(node, context, 
                // skip reserved "is" prop <component is>
                isProp ? node.props.filter(p => p !== isProp) : node.props);
                patchFlag = propsBuildResult.patchFlag;
                dynamicPropNames = propsBuildResult.dynamicPropNames;
                runtimeDirectives = propsBuildResult.directives;
                if (!propsBuildResult.props) {
                    hasProps = false;
                }
                else {
                    args.push(propsBuildResult.props);
                }
            }
            // children
            const hasChildren = node.children.length > 0;
            if (hasChildren) {
                if (!hasProps) {
                    args.push(`null`);
                }
                // Portal & KeepAlive should have normal children instead of slots
                // Portal is not a real component has dedicated handling in the renderer
                // KeepAlive should not track its own deps so that it can be used inside
                // Transition
                if (isComponent &&
                    builtInComponentSymbol !== PORTAL &&
                    builtInComponentSymbol !== KEEP_ALIVE) {
                    const { slots, hasDynamicSlots } = buildSlots(node, context);
                    args.push(slots);
                    if (hasDynamicSlots) {
                        patchFlag |= 512 /* DYNAMIC_SLOTS */;
                    }
                }
                else if (node.children.length === 1) {
                    const child = node.children[0];
                    const type = child.type;
                    // check for dynamic text children
                    const hasDynamicTextChild = type === 5 /* INTERPOLATION */ ||
                        type === 8 /* COMPOUND_EXPRESSION */;
                    if (hasDynamicTextChild && !isStaticNode(child)) {
                        patchFlag |= 1 /* TEXT */;
                    }
                    // pass directly if the only child is a text node
                    // (plain / interpolation / expression)
                    if (hasDynamicTextChild || type === 2 /* TEXT */) {
                        args.push(child);
                    }
                    else {
                        args.push(node.children);
                    }
                }
                else {
                    args.push(node.children);
                }
            }
            // patchFlag & dynamicPropNames
            if (patchFlag !== 0) {
                if (!hasChildren) {
                    if (!hasProps) {
                        args.push(`null`);
                    }
                    args.push(`null`);
                }
                {
                    const flagNames = Object.keys(PatchFlagNames)
                        .map(Number)
                        .filter(n => n > 0 && patchFlag & n)
                        .map(n => PatchFlagNames[n])
                        .join(`, `);
                    args.push(patchFlag + ` /* ${flagNames} */`);
                }
                if (dynamicPropNames && dynamicPropNames.length) {
                    args.push(stringifyDynamicPropNames(dynamicPropNames));
                }
            }
            const { loc } = node;
            const vnode = createCallExpression(context.helper(CREATE_VNODE), args, loc);
            if (runtimeDirectives && runtimeDirectives.length) {
                node.codegenNode = createCallExpression(context.helper(WITH_DIRECTIVES), [
                    vnode,
                    createArrayExpression(runtimeDirectives.map(dir => buildDirectiveArgs(dir, context)), loc)
                ], loc);
            }
            else {
                node.codegenNode = vnode;
            }
        };
    };
    function stringifyDynamicPropNames(props) {
        let propsNamesString = `[`;
        for (let i = 0, l = props.length; i < l; i++) {
            propsNamesString += JSON.stringify(props[i]);
            if (i < l - 1)
                propsNamesString += ', ';
        }
        return propsNamesString + `]`;
    }
    function buildProps(node, context, props = node.props) {
        const elementLoc = node.loc;
        const isComponent = node.tagType === 1 /* COMPONENT */;
        let properties = [];
        const mergeArgs = [];
        const runtimeDirectives = [];
        // patchFlag analysis
        let patchFlag = 0;
        let hasRef = false;
        let hasClassBinding = false;
        let hasStyleBinding = false;
        let hasDynamicKeys = false;
        const dynamicPropNames = [];
        const analyzePatchFlag = ({ key, value }) => {
            if (key.type === 4 /* SIMPLE_EXPRESSION */ && key.isStatic) {
                if (value.type === 20 /* JS_CACHE_EXPRESSION */ ||
                    ((value.type === 4 /* SIMPLE_EXPRESSION */ ||
                        value.type === 8 /* COMPOUND_EXPRESSION */) &&
                        isStaticNode(value))) {
                    return;
                }
                const name = key.content;
                if (name === 'ref') {
                    hasRef = true;
                }
                else if (name === 'class') {
                    hasClassBinding = true;
                }
                else if (name === 'style') {
                    hasStyleBinding = true;
                }
                else if (name !== 'key') {
                    dynamicPropNames.push(name);
                }
            }
            else {
                hasDynamicKeys = true;
            }
        };
        for (let i = 0; i < props.length; i++) {
            // static attribute
            const prop = props[i];
            if (prop.type === 6 /* ATTRIBUTE */) {
                const { loc, name, value } = prop;
                if (name === 'ref') {
                    hasRef = true;
                }
                properties.push(createObjectProperty(createSimpleExpression(name, true, getInnerRange(loc, 0, name.length)), createSimpleExpression(value ? value.content : '', true, value ? value.loc : loc)));
            }
            else {
                // directives
                const { name, arg, exp, loc } = prop;
                // skip v-slot - it is handled by its dedicated transform.
                if (name === 'slot') {
                    if (!isComponent) {
                        context.onError(createCompilerError(46 /* X_V_SLOT_MISPLACED */, loc));
                    }
                    continue;
                }
                // skip v-once - it is handled by its dedicated transform.
                if (name === 'once') {
                    continue;
                }
                // special case for v-bind and v-on with no argument
                const isBind = name === 'bind';
                const isOn = name === 'on';
                if (!arg && (isBind || isOn)) {
                    hasDynamicKeys = true;
                    if (exp) {
                        if (properties.length) {
                            mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
                            properties = [];
                        }
                        if (isBind) {
                            mergeArgs.push(exp);
                        }
                        else {
                            // v-on="obj" -> toHandlers(obj)
                            mergeArgs.push({
                                type: 13 /* JS_CALL_EXPRESSION */,
                                loc,
                                callee: context.helper(TO_HANDLERS),
                                arguments: [exp]
                            });
                        }
                    }
                    else {
                        context.onError(createCompilerError(isBind
                            ? 39 /* X_V_BIND_NO_EXPRESSION */
                            : 40 /* X_V_ON_NO_EXPRESSION */, loc));
                    }
                    continue;
                }
                const directiveTransform = context.directiveTransforms[name];
                if (directiveTransform) {
                    // has built-in directive transform.
                    const { props, needRuntime } = directiveTransform(prop, node, context);
                    props.forEach(analyzePatchFlag);
                    properties.push(...props);
                    if (needRuntime) {
                        runtimeDirectives.push(prop);
                        if (isSymbol(needRuntime)) {
                            directiveImportMap.set(prop, needRuntime);
                        }
                    }
                }
                else {
                    // no built-in transform, this is a user custom directive.
                    runtimeDirectives.push(prop);
                }
            }
        }
        let propsExpression = undefined;
        // has v-bind="object" or v-on="object", wrap with mergeProps
        if (mergeArgs.length) {
            if (properties.length) {
                mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
            }
            if (mergeArgs.length > 1) {
                propsExpression = createCallExpression(context.helper(MERGE_PROPS), mergeArgs, elementLoc);
            }
            else {
                // single v-bind with nothing else - no need for a mergeProps call
                propsExpression = mergeArgs[0];
            }
        }
        else if (properties.length) {
            propsExpression = createObjectExpression(dedupeProperties(properties), elementLoc);
        }
        // patchFlag analysis
        if (hasDynamicKeys) {
            patchFlag |= 16 /* FULL_PROPS */;
        }
        else {
            if (hasClassBinding) {
                patchFlag |= 2 /* CLASS */;
            }
            if (hasStyleBinding) {
                patchFlag |= 4 /* STYLE */;
            }
            if (dynamicPropNames.length) {
                patchFlag |= 8 /* PROPS */;
            }
        }
        if (patchFlag === 0 && (hasRef || runtimeDirectives.length > 0)) {
            patchFlag |= 32 /* NEED_PATCH */;
        }
        return {
            props: propsExpression,
            directives: runtimeDirectives,
            patchFlag,
            dynamicPropNames
        };
    }
    // Dedupe props in an object literal.
    // Literal duplicated attributes would have been warned during the parse phase,
    // however, it's possible to encounter duplicated `onXXX` handlers with different
    // modifiers. We also need to merge static and dynamic class / style attributes.
    // - onXXX handlers / style: merge into array
    // - class: merge into single expression with concatenation
    function dedupeProperties(properties) {
        const knownProps = new Map();
        const deduped = [];
        for (let i = 0; i < properties.length; i++) {
            const prop = properties[i];
            // dynamic keys are always allowed
            if (prop.key.type === 8 /* COMPOUND_EXPRESSION */ || !prop.key.isStatic) {
                deduped.push(prop);
                continue;
            }
            const name = prop.key.content;
            const existing = knownProps.get(name);
            if (existing) {
                if (name === 'style' ||
                    name === 'class' ||
                    name.startsWith('on') ||
                    name.startsWith('vnode')) {
                    mergeAsArray(existing, prop);
                }
                // unexpected duplicate, should have emitted error during parse
            }
            else {
                knownProps.set(name, prop);
                deduped.push(prop);
            }
        }
        return deduped;
    }
    function mergeAsArray(existing, incoming) {
        if (existing.value.type === 16 /* JS_ARRAY_EXPRESSION */) {
            existing.value.elements.push(incoming.value);
        }
        else {
            existing.value = createArrayExpression([existing.value, incoming.value], existing.loc);
        }
    }
    function buildDirectiveArgs(dir, context) {
        const dirArgs = [];
        const runtime = directiveImportMap.get(dir);
        if (runtime) {
            context.helper(runtime);
            dirArgs.push(context.helperString(runtime));
        }
        else {
            // inject statement for resolving directive
            context.helper(RESOLVE_DIRECTIVE);
            context.directives.add(dir.name);
            dirArgs.push(toValidAssetId(dir.name, `directive`));
        }
        const { loc } = dir;
        if (dir.exp)
            dirArgs.push(dir.exp);
        if (dir.arg) {
            if (!dir.exp) {
                dirArgs.push(`void 0`);
            }
            dirArgs.push(dir.arg);
        }
        if (Object.keys(dir.modifiers).length) {
            if (!dir.arg) {
                if (!dir.exp) {
                    dirArgs.push(`void 0`);
                }
                dirArgs.push(`void 0`);
            }
            const trueExpression = createSimpleExpression(`true`, false, loc);
            dirArgs.push(createObjectExpression(dir.modifiers.map(modifier => createObjectProperty(modifier, trueExpression)), loc));
        }
        return createArrayExpression(dirArgs, dir.loc);
    }
  
    const transformSlotOutlet = (node, context) => {
        if (isSlotOutlet(node)) {
            const { props, children, loc } = node;
            const $slots = context.prefixIdentifiers ? `_ctx.$slots` : `$slots`;
            let slotName = `"default"`;
            // check for <slot name="xxx" OR :name="xxx" />
            let nameIndex = -1;
            for (let i = 0; i < props.length; i++) {
                const prop = props[i];
                if (prop.type === 6 /* ATTRIBUTE */) {
                    if (prop.name === `name` && prop.value) {
                        // static name="xxx"
                        slotName = JSON.stringify(prop.value.content);
                        nameIndex = i;
                        break;
                    }
                }
                else if (prop.name === `bind`) {
                    const { arg, exp } = prop;
                    if (arg &&
                        exp &&
                        arg.type === 4 /* SIMPLE_EXPRESSION */ &&
                        arg.isStatic &&
                        arg.content === `name`) {
                        // dynamic :name="xxx"
                        slotName = exp;
                        nameIndex = i;
                        break;
                    }
                }
            }
            const slotArgs = [$slots, slotName];
            const propsWithoutName = nameIndex > -1
                ? props.slice(0, nameIndex).concat(props.slice(nameIndex + 1))
                : props;
            let hasProps = propsWithoutName.length > 0;
            if (hasProps) {
                const { props: propsExpression, directives } = buildProps(node, context, propsWithoutName);
                if (directives.length) {
                    context.onError(createCompilerError(41 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */, directives[0].loc));
                }
                if (propsExpression) {
                    slotArgs.push(propsExpression);
                }
                else {
                    hasProps = false;
                }
            }
            if (children.length) {
                if (!hasProps) {
                    slotArgs.push(`{}`);
                }
                slotArgs.push(children);
            }
            node.codegenNode = createCallExpression(context.helper(RENDER_SLOT), slotArgs, loc);
        }
    };
  
    const fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/;
    const transformOn = (dir, node, context, augmentor) => {
        const { loc, modifiers, arg } = dir;
        if (!dir.exp && !modifiers.length) {
            context.onError(createCompilerError(40 /* X_V_ON_NO_EXPRESSION */, loc));
        }
        let eventName;
        if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
            if (arg.isStatic) {
                eventName = createSimpleExpression(`on${capitalize(arg.content)}`, true, arg.loc);
            }
            else {
                eventName = createCompoundExpression([`"on" + (`, arg, `)`]);
            }
        }
        else {
            // already a compound expression.
            eventName = arg;
            eventName.children.unshift(`"on" + (`);
            eventName.children.push(`)`);
        }
        // handler processing
        let exp = dir.exp;
        let isCacheable = !exp;
        if (exp) {
            const isMemberExp = isMemberExpression(exp.content);
            const isInlineStatement = !(isMemberExp || fnExpRE.test(exp.content));
            if (isInlineStatement || (isCacheable && isMemberExp)) {
                // wrap inline statement in a function expression
                exp = createCompoundExpression([
                    `$event => (`,
                    ...(exp.type === 4 /* SIMPLE_EXPRESSION */ ? [exp] : exp.children),
                    `)`
                ]);
            }
        }
        let ret = {
            props: [
                createObjectProperty(eventName, exp || createSimpleExpression(`() => {}`, false, loc))
            ],
            needRuntime: false
        };
        // apply extended compiler augmentor
        if (augmentor) {
            ret = augmentor(ret);
        }
        if (isCacheable) {
            // cache handlers so that it's always the same handler being passed down.
            // this avoids unnecessary re-renders when users use inline handlers on
            // components.
            ret.props[0].value = context.cache(ret.props[0].value);
        }
        return ret;
    };
  
    // v-bind without arg is handled directly in ./transformElements.ts due to it affecting
    // codegen for the entire props object. This transform here is only for v-bind
    // *with* args.
    const transformBind = (dir, node, context) => {
        const { exp, modifiers, loc } = dir;
        const arg = dir.arg;
        if (!exp) {
            context.onError(createCompilerError(39 /* X_V_BIND_NO_EXPRESSION */, loc));
        }
        // .prop is no longer necessary due to new patch behavior
        // .sync is replaced by v-model:arg
        if (modifiers.includes('camel')) {
            if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
                if (arg.isStatic) {
                    arg.content = camelize(arg.content);
                }
                else {
                    arg.content = `${context.helperString(CAMELIZE)}(${arg.content})`;
                }
            }
            else {
                arg.children.unshift(`${context.helperString(CAMELIZE)}(`);
                arg.children.push(`)`);
            }
        }
        return {
            props: [
                createObjectProperty(arg, exp || createSimpleExpression('', true, loc))
            ],
            needRuntime: false
        };
    };
  
    const isText$1 = (node) => node.type === 5 /* INTERPOLATION */ || node.type === 2 /* TEXT */;
    // Merge adjacent text nodes and expressions into a single expression
    // e.g. <div>abc {{ d }} {{ e }}</div> should have a single expression node as child.
    const transformText = (node, context) => {
        if (node.type === 0 /* ROOT */ ||
            node.type === 1 /* ELEMENT */ ||
            node.type === 11 /* FOR */) {
            // perform the transform on node exit so that all expressions have already
            // been processed.
            return () => {
                const children = node.children;
                let currentContainer = undefined;
                let hasText = false;
                for (let i = 0; i < children.length; i++) {
                    const child = children[i];
                    if (isText$1(child)) {
                        hasText = true;
                        for (let j = i + 1; j < children.length; j++) {
                            const next = children[j];
                            if (isText$1(next)) {
                                if (!currentContainer) {
                                    currentContainer = children[i] = {
                                        type: 8 /* COMPOUND_EXPRESSION */,
                                        loc: child.loc,
                                        children: [child]
                                    };
                                }
                                // merge adjacent text node into current
                                currentContainer.children.push(` + `, next);
                                children.splice(j, 1);
                                j--;
                            }
                            else {
                                currentContainer = undefined;
                                break;
                            }
                        }
                    }
                }
                if (!hasText ||
                    // if this is a plain element with a single text child, leave it
                    // as-is since the runtime has dedicated fast path for this by directly
                    // setting textContent of the element.
                    // for component root it's always normalized anyway.
                    (children.length === 1 &&
                        (node.type === 0 /* ROOT */ ||
                            (node.type === 1 /* ELEMENT */ &&
                                node.tagType === 0 /* ELEMENT */)))) {
                    return;
                }
                // pre-convert text nodes into createTextVNode(text) calls to avoid
                // runtime normalization.
                for (let i = 0; i < children.length; i++) {
                    const child = children[i];
                    if (isText$1(child) || child.type === 8 /* COMPOUND_EXPRESSION */) {
                        const callArgs = [];
                        // createTextVNode defaults to single whitespace, so if it is a
                        // single space the code could be an empty call to save bytes.
                        if (child.type !== 2 /* TEXT */ || child.content !== ' ') {
                            callArgs.push(child);
                        }
                        // mark dynamic text with flag so it gets patched inside a block
                        if (child.type !== 2 /* TEXT */) {
                            callArgs.push(`${1 /* TEXT */} /* ${PatchFlagNames[1 /* TEXT */]} */`);
                        }
                        children[i] = {
                            type: 12 /* TEXT_CALL */,
                            content: child,
                            loc: child.loc,
                            codegenNode: createCallExpression(context.helper(CREATE_TEXT), callArgs)
                        };
                    }
                }
            };
        }
    };
  
    const transformOnce = (node, context) => {
        if (node.type === 1 /* ELEMENT */ && findDir(node, 'once', true)) {
            context.helper(SET_BLOCK_TRACKING);
            return () => {
                if (node.codegenNode) {
                    node.codegenNode = context.cache(node.codegenNode, true /* isVNode */);
                }
            };
        }
    };
  
    const transformModel = (dir, node, context) => {
        const { exp, arg } = dir;
        if (!exp) {
            context.onError(createCompilerError(47 /* X_V_MODEL_NO_EXPRESSION */, dir.loc));
            return createTransformProps();
        }
        const expString = exp.type === 4 /* SIMPLE_EXPRESSION */ ? exp.content : exp.loc.source;
        if (!isMemberExpression(expString)) {
            context.onError(createCompilerError(48 /* X_V_MODEL_MALFORMED_EXPRESSION */, exp.loc));
            return createTransformProps();
        }
        const propName = arg ? arg : createSimpleExpression('modelValue', true);
        const eventName = arg
            ? arg.type === 4 /* SIMPLE_EXPRESSION */ && arg.isStatic
                ? `onUpdate:${arg.content}`
                : createCompoundExpression([
                    '"onUpdate:" + ',
                    ...(arg.type === 4 /* SIMPLE_EXPRESSION */ ? [arg] : arg.children)
                ])
            : `onUpdate:modelValue`;
        const props = [
            // modelValue: foo
            createObjectProperty(propName, dir.exp),
            // "onUpdate:modelValue": $event => (foo = $event)
            createObjectProperty(eventName, createCompoundExpression([
                `$event => (`,
                ...(exp.type === 4 /* SIMPLE_EXPRESSION */ ? [exp] : exp.children),
                ` = $event)`
            ]))
        ];
        // modelModifiers: { foo: true, "bar-baz": true }
        if (dir.modifiers.length && node.tagType === 1 /* COMPONENT */) {
            const modifiers = dir.modifiers
                .map(m => (isSimpleIdentifier(m) ? m : JSON.stringify(m)) + `: true`)
                .join(`, `);
            const modifiersKey = arg
                ? arg.type === 4 /* SIMPLE_EXPRESSION */ && arg.isStatic
                    ? `${arg.content}Modifiers`
                    : createCompoundExpression([
                        ...(arg.type === 4 /* SIMPLE_EXPRESSION */
                            ? [arg]
                            : arg.children),
                        ' + "Modifiers"'
                    ])
                : `modelModifiers`;
            props.push(createObjectProperty(modifiersKey, createSimpleExpression(`{ ${modifiers} }`, false, dir.loc, true)));
        }
        return createTransformProps(props);
    };
    function createTransformProps(props = []) {
        return { props, needRuntime: false };
    }
  
    // we name it `baseCompile` so that higher order compilers like
    // @vue/compiler-dom can export `compile` while re-exporting everything else.
    function baseCompile(template, options = {}) {
        const onError = options.onError || defaultOnError;
        const isModuleMode = options.mode === 'module';
        /* istanbul ignore if */
        {
            if (options.prefixIdentifiers === true) {
                onError(createCompilerError(51 /* X_PREFIX_ID_NOT_SUPPORTED */));
            }
            else if (isModuleMode) {
                onError(createCompilerError(52 /* X_MODULE_MODE_NOT_SUPPORTED */));
            }
        }
        const prefixIdentifiers = !true && (options.prefixIdentifiers === true || isModuleMode);
        if ( options.cacheHandlers) {
            onError(createCompilerError(53 /* X_CACHE_HANDLER_NOT_SUPPORTED */));
        }
        if (options.scopeId && !isModuleMode) {
            onError(createCompilerError(54 /* X_SCOPE_ID_NOT_SUPPORTED */));
        }
        const ast = isString(template) ? baseParse(template, options) : template;
        transform(ast, {
            ...options,
            prefixIdentifiers,
            nodeTransforms: [
                transformOnce,
                transformIf,
                transformFor,
                ...( []),
                transformSlotOutlet,
                transformElement,
                trackSlotScopes,
                transformText,
                ...(options.nodeTransforms || []) // user transforms
            ],
            directiveTransforms: {
                on: transformOn,
                bind: transformBind,
                model: transformModel,
                ...(options.directiveTransforms || {}) // user transforms
            }
        });
        return generate(ast, {
            ...options,
            prefixIdentifiers
        });
    }
  
    const isRawTextContainer = /*#__PURE__*/ makeMap('style,iframe,script,noscript', true);
    const parserOptionsMinimal = {
        isVoidTag,
        isNativeTag: tag => isHTMLTag(tag) || isSVGTag(tag),
        isPreTag: tag => tag === 'pre',
        // https://html.spec.whatwg.org/multipage/parsing.html#tree-construction-dispatcher
        getNamespace(tag, parent) {
            let ns = parent ? parent.ns : 0 /* HTML */;
            if (parent && ns === 2 /* MATH_ML */) {
                if (parent.tag === 'annotation-xml') {
                    if (tag === 'svg') {
                        return 1 /* SVG */;
                    }
                    if (parent.props.some(a => a.type === 6 /* ATTRIBUTE */ &&
                        a.name === 'encoding' &&
                        a.value != null &&
                        (a.value.content === 'text/html' ||
                            a.value.content === 'application/xhtml+xml'))) {
                        ns = 0 /* HTML */;
                    }
                }
                else if (/^m(?:[ions]|text)$/.test(parent.tag) &&
                    tag !== 'mglyph' &&
                    tag !== 'malignmark') {
                    ns = 0 /* HTML */;
                }
            }
            else if (parent && ns === 1 /* SVG */) {
                if (parent.tag === 'foreignObject' ||
                    parent.tag === 'desc' ||
                    parent.tag === 'title') {
                    ns = 0 /* HTML */;
                }
            }
            if (ns === 0 /* HTML */) {
                if (tag === 'svg') {
                    return 1 /* SVG */;
                }
                if (tag === 'math') {
                    return 2 /* MATH_ML */;
                }
            }
            return ns;
        },
        // https://html.spec.whatwg.org/multipage/parsing.html#parsing-html-fragments
        getTextMode(tag, ns) {
            if (ns === 0 /* HTML */) {
                if (tag === 'textarea' || tag === 'title') {
                    return 1 /* RCDATA */;
                }
                if (isRawTextContainer(tag)) {
                    return 2 /* RAWTEXT */;
                }
            }
            return 0 /* DATA */;
        }
    };
  
    // Parse inline CSS strings for static style attributes into an object.
    // This is a NodeTransform since it works on the static `style` attribute and
    // converts it into a dynamic equivalent:
    // style="color: red" -> :style='{ "color": "red" }'
    // It is then processed by `transformElement` and included in the generated
    // props.
    const transformStyle = (node, context) => {
        if (node.type === 1 /* ELEMENT */) {
            node.props.forEach((p, i) => {
                if (p.type === 6 /* ATTRIBUTE */ && p.name === 'style' && p.value) {
                    // replace p with an expression node
                    const parsed = JSON.stringify(parseInlineCSS(p.value.content));
                    const exp = context.hoist(createSimpleExpression(parsed, false, p.loc));
                    node.props[i] = {
                        type: 7 /* DIRECTIVE */,
                        name: `bind`,
                        arg: createSimpleExpression(`style`, true, p.loc),
                        exp,
                        modifiers: [],
                        loc: p.loc
                    };
                }
            });
        }
    };
    const listDelimiterRE = /;(?![^(]*\))/g;
    const propertyDelimiterRE = /:(.+)/;
    function parseInlineCSS(cssText) {
        const res = {};
        cssText.split(listDelimiterRE).forEach(item => {
            if (item) {
                const tmp = item.split(propertyDelimiterRE);
                tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
            }
        });
        return res;
    }
  
    const transformCloak = (node, context) => {
        return { props: [], needRuntime: false };
    };
  
    function createDOMCompilerError(code, loc) {
        return createCompilerError(code, loc,  DOMErrorMessages );
    }
    const DOMErrorMessages = {
        [55 /* X_V_HTML_NO_EXPRESSION */]: `v-html is missing expression.`,
        [56 /* X_V_HTML_WITH_CHILDREN */]: `v-html will override element children.`,
        [57 /* X_V_TEXT_NO_EXPRESSION */]: `v-text is missing expression.`,
        [58 /* X_V_TEXT_WITH_CHILDREN */]: `v-text will override element children.`,
        [59 /* X_V_MODEL_ON_INVALID_ELEMENT */]: `v-model can only be used on <input>, <textarea> and <select> elements.`,
        [60 /* X_V_MODEL_ARG_ON_ELEMENT */]: `v-model argument is not supported on plain elements.`,
        [61 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */]: `v-model cannot used on file inputs since they are read-only. Use a v-on:change listener instead.`,
        [62 /* X_V_SHOW_NO_EXPRESSION */]: `v-show is missing expression.`
    };
  
    const transformVHtml = (dir, node, context) => {
        const { exp, loc } = dir;
        if (!exp) {
            context.onError(createDOMCompilerError(55 /* X_V_HTML_NO_EXPRESSION */, loc));
        }
        if (node.children.length) {
            context.onError(createDOMCompilerError(56 /* X_V_HTML_WITH_CHILDREN */, loc));
            node.children.length = 0;
        }
        return {
            props: [
                createObjectProperty(createSimpleExpression(`innerHTML`, true, loc), exp || createSimpleExpression('', true))
            ],
            needRuntime: false
        };
    };
  
    const transformVText = (dir, node, context) => {
        const { exp, loc } = dir;
        if (!exp) {
            context.onError(createDOMCompilerError(57 /* X_V_TEXT_NO_EXPRESSION */, loc));
        }
        if (node.children.length) {
            context.onError(createDOMCompilerError(58 /* X_V_TEXT_WITH_CHILDREN */, loc));
            node.children.length = 0;
        }
        return {
            props: [
                createObjectProperty(createSimpleExpression(`textContent`, true, loc), exp || createSimpleExpression('', true))
            ],
            needRuntime: false
        };
    };
  
    const V_MODEL_RADIO = Symbol( `vModelRadio` );
    const V_MODEL_CHECKBOX = Symbol( `vModelCheckbox` );
    const V_MODEL_TEXT = Symbol( `vModelText` );
    const V_MODEL_SELECT = Symbol( `vModelSelect` );
    const V_MODEL_DYNAMIC = Symbol( `vModelDynamic` );
    const V_ON_WITH_MODIFIERS = Symbol( `vOnModifiersGuard` );
    const V_ON_WITH_KEYS = Symbol( `vOnKeysGuard` );
    const V_SHOW = Symbol( `vShow` );
    const TRANSITION = Symbol( `Transition` );
    const TRANSITION_GROUP = Symbol( `TransitionGroup` );
    registerRuntimeHelpers({
        [V_MODEL_RADIO]: `vModelRadio`,
        [V_MODEL_CHECKBOX]: `vModelCheckbox`,
        [V_MODEL_TEXT]: `vModelText`,
        [V_MODEL_SELECT]: `vModelSelect`,
        [V_MODEL_DYNAMIC]: `vModelDynamic`,
        [V_ON_WITH_MODIFIERS]: `withModifiers`,
        [V_ON_WITH_KEYS]: `withKeys`,
        [V_SHOW]: `vShow`,
        [TRANSITION]: `Transition`,
        [TRANSITION_GROUP]: `TransitionGroup`
    });
  
    const transformModel$1 = (dir, node, context) => {
        const baseResult = transformModel(dir, node, context);
        // base transform has errors
        if (!baseResult.props.length) {
            return baseResult;
        }
        const { tag, tagType } = node;
        if (tagType === 0 /* ELEMENT */) {
            if (dir.arg) {
                context.onError(createDOMCompilerError(60 /* X_V_MODEL_ARG_ON_ELEMENT */, dir.arg.loc));
            }
            if (tag === 'input' || tag === 'textarea' || tag === 'select') {
                let directiveToUse = V_MODEL_TEXT;
                let isInvalidType = false;
                if (tag === 'input') {
                    const type = findProp(node, `type`);
                    if (type) {
                        if (type.type === 7 /* DIRECTIVE */) {
                            // :type="foo"
                            directiveToUse = V_MODEL_DYNAMIC;
                        }
                        else if (type.value) {
                            switch (type.value.content) {
                                case 'radio':
                                    directiveToUse = V_MODEL_RADIO;
                                    break;
                                case 'checkbox':
                                    directiveToUse = V_MODEL_CHECKBOX;
                                    break;
                                case 'file':
                                    isInvalidType = true;
                                    context.onError(createDOMCompilerError(61 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */, dir.loc));
                                    break;
                            }
                        }
                    }
                }
                else if (tag === 'select') {
                    directiveToUse = V_MODEL_SELECT;
                }
                // inject runtime directive
                // by returning the helper symbol via needRuntime
                // the import will replaced a resolveDirective call.
                if (!isInvalidType) {
                    baseResult.needRuntime = context.helper(directiveToUse);
                }
            }
            else {
                context.onError(createDOMCompilerError(59 /* X_V_MODEL_ON_INVALID_ELEMENT */, dir.loc));
            }
        }
        return baseResult;
    };
  
    const isEventOptionModifier = /*#__PURE__*/ makeMap(`passive,once,capture`);
    const isNonKeyModifier = /*#__PURE__*/ makeMap(
    // event propagation management
  `stop,prevent,self,`   +
        // system modifiers + exact
        `ctrl,shift,alt,meta,exact,` +
        // mouse
        `left,middle,right`);
    const isKeyboardEvent = /*#__PURE__*/ makeMap(`onkeyup,onkeydown,onkeypress`, true);
    const generateModifiers = (modifiers) => {
        const keyModifiers = [];
        const nonKeyModifiers = [];
        const eventOptionModifiers = [];
        for (let i = 0; i < modifiers.length; i++) {
            const modifier = modifiers[i];
            if (isEventOptionModifier(modifier)) {
                // eventOptionModifiers: modifiers for addEventListener() options, e.g. .passive & .capture
                eventOptionModifiers.push(modifier);
            }
            else {
                // runtimeModifiers: modifiers that needs runtime guards
                if (isNonKeyModifier(modifier)) {
                    nonKeyModifiers.push(modifier);
                }
                else {
                    keyModifiers.push(modifier);
                }
            }
        }
        return {
            keyModifiers,
            nonKeyModifiers,
            eventOptionModifiers
        };
    };
    const transformOn$1 = (dir, node, context) => {
        return transformOn(dir, node, context, baseResult => {
            const { modifiers } = dir;
            if (!modifiers.length)
                return baseResult;
            let { key, value: handlerExp } = baseResult.props[0];
            const { keyModifiers, nonKeyModifiers, eventOptionModifiers } = generateModifiers(modifiers);
            if (nonKeyModifiers.length) {
                handlerExp = createCallExpression(context.helper(V_ON_WITH_MODIFIERS), [
                    handlerExp,
                    JSON.stringify(nonKeyModifiers)
                ]);
            }
            if (keyModifiers.length &&
                // if event name is dynamic, always wrap with keys guard
                (key.type === 8 /* COMPOUND_EXPRESSION */ ||
                    !key.isStatic ||
                    isKeyboardEvent(key.content))) {
                handlerExp = createCallExpression(context.helper(V_ON_WITH_KEYS), [
                    handlerExp,
                    JSON.stringify(keyModifiers)
                ]);
            }
            if (eventOptionModifiers.length) {
                handlerExp = createObjectExpression([
                    createObjectProperty('handler', handlerExp),
                    createObjectProperty('options', createObjectExpression(eventOptionModifiers.map(modifier => createObjectProperty(modifier, createSimpleExpression('true', false)))))
                ]);
            }
            return {
                props: [createObjectProperty(key, handlerExp)],
                needRuntime: false
            };
        });
    };
  
    const transformShow = (dir, node, context) => {
        const { exp, loc } = dir;
        if (!exp) {
            context.onError(createDOMCompilerError(62 /* X_V_SHOW_NO_EXPRESSION */, loc));
        }
        return {
            props: [],
            needRuntime: context.helper(V_SHOW)
        };
    };
  
    const parserOptions =  parserOptionsMinimal ;
    function compile(template, options = {}) {
        return baseCompile(template, {
            ...parserOptions,
            ...options,
            nodeTransforms: [transformStyle, ...(options.nodeTransforms || [])],
            directiveTransforms: {
                cloak: transformCloak,
                html: transformVHtml,
                text: transformVText,
                model: transformModel$1,
                on: transformOn$1,
                show: transformShow,
                ...(options.directiveTransforms || {})
            },
            isBuiltInComponent: tag => {
                if (isBuiltInType(tag, `Transition`)) {
                    return TRANSITION;
                }
                else if (isBuiltInType(tag, `TransitionGroup`)) {
                    return TRANSITION_GROUP;
                }
            }
        });
    }
  
    const targetMap = new WeakMap();
    const effectStack = [];
    let activeEffect;
    const ITERATE_KEY = Symbol('iterate');
    function isEffect(fn) {
        return fn != null && fn._isEffect === true;
    }
    function effect(fn, options = EMPTY_OBJ) {
        if (isEffect(fn)) {
            fn = fn.raw;
        }
        const effect = createReactiveEffect(fn, options);
        if (!options.lazy) {
            effect();
        }
        return effect;
    }
    function stop(effect) {
        if (effect.active) {
            cleanup(effect);
            if (effect.options.onStop) {
                effect.options.onStop();
            }
            effect.active = false;
        }
    }
    function createReactiveEffect(fn, options) {
        const effect = function reactiveEffect(...args) {
            return run(effect, fn, args);
        };
        effect._isEffect = true;
        effect.active = true;
        effect.raw = fn;
        effect.deps = [];
        effect.options = options;
        return effect;
    }
    function run(effect, fn, args) {
        if (!effect.active) {
            return fn(...args);
        }
        if (!effectStack.includes(effect)) {
            cleanup(effect);
            try {
                effectStack.push(effect);
                activeEffect = effect;
                return fn(...args);
            }
            finally {
                effectStack.pop();
                activeEffect = effectStack[effectStack.length - 1];
            }
        }
    }
    function cleanup(effect) {
        const { deps } = effect;
        if (deps.length) {
            for (let i = 0; i < deps.length; i++) {
                deps[i].delete(effect);
            }
            deps.length = 0;
        }
    }
    let shouldTrack = true;
    function pauseTracking() {
        shouldTrack = false;
    }
    function resumeTracking() {
        shouldTrack = true;
    }
    function track(target, type, key) {
        if (!shouldTrack || activeEffect === undefined) {
            return;
        }
        let depsMap = targetMap.get(target);
        if (depsMap === void 0) {
            targetMap.set(target, (depsMap = new Map()));
        }
        let dep = depsMap.get(key);
        if (dep === void 0) {
            depsMap.set(key, (dep = new Set()));
        }
        if (!dep.has(activeEffect)) {
            dep.add(activeEffect);
            activeEffect.deps.push(dep);
            if ( activeEffect.options.onTrack) {
                activeEffect.options.onTrack({
                    effect: activeEffect,
                    target,
                    type,
                    key
                });
            }
        }
    }
    function trigger(target, type, key, extraInfo) {
        const depsMap = targetMap.get(target);
        if (depsMap === void 0) {
            // never been tracked
            return;
        }
        const effects = new Set();
        const computedRunners = new Set();
        if (type === "clear" /* CLEAR */) {
            // collection being cleared, trigger all effects for target
            depsMap.forEach(dep => {
                addRunners(effects, computedRunners, dep);
            });
        }
        else {
            // schedule runs for SET | ADD | DELETE
            if (key !== void 0) {
                addRunners(effects, computedRunners, depsMap.get(key));
            }
            // also run for iteration key on ADD | DELETE
            if (type === "add" /* ADD */ || type === "delete" /* DELETE */) {
                const iterationKey = isArray(target) ? 'length' : ITERATE_KEY;
                addRunners(effects, computedRunners, depsMap.get(iterationKey));
            }
        }
        const run = (effect) => {
            scheduleRun(effect, target, type, key, extraInfo);
        };
        // Important: computed effects must be run first so that computed getters
        // can be invalidated before any normal effects that depend on them are run.
        computedRunners.forEach(run);
        effects.forEach(run);
    }
    function addRunners(effects, computedRunners, effectsToAdd) {
        if (effectsToAdd !== void 0) {
            effectsToAdd.forEach(effect => {
                if (effect.options.computed) {
                    computedRunners.add(effect);
                }
                else {
                    effects.add(effect);
                }
            });
        }
    }
    function scheduleRun(effect, target, type, key, extraInfo) {
        if ( effect.options.onTrigger) {
            const event = {
                effect,
                target,
                key,
                type
            };
            effect.options.onTrigger(extraInfo ? extend(event, extraInfo) : event);
        }
        if (effect.options.scheduler !== void 0) {
            effect.options.scheduler(effect);
        }
        else {
            effect();
        }
    }
  
    // global immutability lock
    let LOCKED = true;
    function lock() {
        LOCKED = true;
    }
    function unlock() {
        LOCKED = false;
    }
  
    const builtInSymbols = new Set(Object.getOwnPropertyNames(Symbol)
        .map(key => Symbol[key])
        .filter(isSymbol));
    const get = /*#__PURE__*/ createGetter();
    const readonlyGet = /*#__PURE__*/ createGetter(true);
    const shallowReadonlyGet = /*#__PURE__*/ createGetter(true, true);
    function createGetter(isReadonly = false, shallow = false) {
        return function get(target, key, receiver) {
            const res = Reflect.get(target, key, receiver);
            if (isSymbol(key) && builtInSymbols.has(key)) {
                return res;
            }
            if (shallow) {
                track(target, "get" /* GET */, key);
                // TODO strict mode that returns a shallow-readonly version of the value
                return res;
            }
            if (isRef(res)) {
                return res.value;
            }
            track(target, "get" /* GET */, key);
            return isObject(res)
                ? isReadonly
                    ? // need to lazy access readonly and reactive here to avoid
                        // circular dependency
                        readonly(res)
                    : reactive(res)
                : res;
        };
    }
    const set = /*#__PURE__*/ createSetter();
    const readonlySet = /*#__PURE__*/ createSetter(true);
    const shallowReadonlySet = /*#__PURE__*/ createSetter(true, true);
    function createSetter(isReadonly = false, shallow = false) {
        return function set(target, key, value, receiver) {
            if (isReadonly && LOCKED) {
                {
                    console.warn(`Set operation on key "${String(key)}" failed: target is readonly.`, target);
                }
                return true;
            }
            const oldValue = target[key];
            if (!shallow) {
                value = toRaw(value);
                if (isRef(oldValue) && !isRef(value)) {
                    oldValue.value = value;
                    return true;
                }
            }
            const hadKey = hasOwn(target, key);
            const result = Reflect.set(target, key, value, receiver);
            // don't trigger if target is something up in the prototype chain of original
            if (target === toRaw(receiver)) {
                /* istanbul ignore else */
                {
                    const extraInfo = { oldValue, newValue: value };
                    if (!hadKey) {
                        trigger(target, "add" /* ADD */, key, extraInfo);
                    }
                    else if (hasChanged(value, oldValue)) {
                        trigger(target, "set" /* SET */, key, extraInfo);
                    }
                }
            }
            return result;
        };
    }
    function deleteProperty(target, key) {
        const hadKey = hasOwn(target, key);
        const oldValue = target[key];
        const result = Reflect.deleteProperty(target, key);
        if (result && hadKey) {
            /* istanbul ignore else */
            {
                trigger(target, "delete" /* DELETE */, key, { oldValue });
            }
        }
        return result;
    }
    function has(target, key) {
        const result = Reflect.has(target, key);
        track(target, "has" /* HAS */, key);
        return result;
    }
    function ownKeys(target) {
        track(target, "iterate" /* ITERATE */, ITERATE_KEY);
        return Reflect.ownKeys(target);
    }
    const mutableHandlers = {
        get,
        set,
        deleteProperty,
        has,
        ownKeys
    };
    const readonlyHandlers = {
        get: readonlyGet,
        set: readonlySet,
        has,
        ownKeys,
        deleteProperty(target, key) {
            if (LOCKED) {
                {
                    console.warn(`Delete operation on key "${String(key)}" failed: target is readonly.`, target);
                }
                return true;
            }
            else {
                return deleteProperty(target, key);
            }
        }
    };
    // props handlers are special in the sense that it should not unwrap top-level
    // refs (in order to allow refs to be explicitly passed down), but should
    // retain the reactivity of the normal readonly object.
    const shallowReadonlyHandlers = {
        ...readonlyHandlers,
        get: shallowReadonlyGet,
        set: shallowReadonlySet
    };
  
    const toReactive = (value) => isObject(value) ? reactive(value) : value;
    const toReadonly = (value) => isObject(value) ? readonly(value) : value;
    const getProto = (v) => Reflect.getPrototypeOf(v);
    function get$1(target, key, wrap) {
        target = toRaw(target);
        key = toRaw(key);
        track(target, "get" /* GET */, key);
        return wrap(getProto(target).get.call(target, key));
    }
    function has$1(key) {
        const target = toRaw(this);
        key = toRaw(key);
        track(target, "has" /* HAS */, key);
        return getProto(target).has.call(target, key);
    }
    function size(target) {
        target = toRaw(target);
        track(target, "iterate" /* ITERATE */, ITERATE_KEY);
        return Reflect.get(getProto(target), 'size', target);
    }
    function add(value) {
        value = toRaw(value);
        const target = toRaw(this);
        const proto = getProto(target);
        const hadKey = proto.has.call(target, value);
        const result = proto.add.call(target, value);
        if (!hadKey) {
            /* istanbul ignore else */
            {
                trigger(target, "add" /* ADD */, value, { newValue: value });
            }
        }
        return result;
    }
    function set$1(key, value) {
        value = toRaw(value);
        const target = toRaw(this);
        const proto = getProto(target);
        const hadKey = proto.has.call(target, key);
        const oldValue = proto.get.call(target, key);
        const result = proto.set.call(target, key, value);
        /* istanbul ignore else */
        {
            const extraInfo = { oldValue, newValue: value };
            if (!hadKey) {
                trigger(target, "add" /* ADD */, key, extraInfo);
            }
            else if (hasChanged(value, oldValue)) {
                trigger(target, "set" /* SET */, key, extraInfo);
            }
        }
        return result;
    }
    function deleteEntry(key) {
        const target = toRaw(this);
        const proto = getProto(target);
        const hadKey = proto.has.call(target, key);
        const oldValue = proto.get ? proto.get.call(target, key) : undefined;
        // forward the operation before queueing reactions
        const result = proto.delete.call(target, key);
        if (hadKey) {
            /* istanbul ignore else */
            {
                trigger(target, "delete" /* DELETE */, key, { oldValue });
            }
        }
        return result;
    }
    function clear() {
        const target = toRaw(this);
        const hadItems = target.size !== 0;
        const oldTarget =  target instanceof Map
                ? new Map(target)
                : new Set(target)
            ;
        // forward the operation before queueing reactions
        const result = getProto(target).clear.call(target);
        if (hadItems) {
            /* istanbul ignore else */
            {
                trigger(target, "clear" /* CLEAR */, void 0, { oldTarget });
            }
        }
        return result;
    }
    function createForEach(isReadonly) {
        return function forEach(callback, thisArg) {
            const observed = this;
            const target = toRaw(observed);
            const wrap = isReadonly ? toReadonly : toReactive;
            track(target, "iterate" /* ITERATE */, ITERATE_KEY);
            // important: create sure the callback is
            // 1. invoked with the reactive map as `this` and 3rd arg
            // 2. the value received should be a corresponding reactive/readonly.
            function wrappedCallback(value, key) {
                return callback.call(observed, wrap(value), wrap(key), observed);
            }
            return getProto(target).forEach.call(target, wrappedCallback, thisArg);
        };
    }
    function createIterableMethod(method, isReadonly) {
        return function (...args) {
            const target = toRaw(this);
            const isPair = method === 'entries' ||
                (method === Symbol.iterator && target instanceof Map);
            const innerIterator = getProto(target)[method].apply(target, args);
            const wrap = isReadonly ? toReadonly : toReactive;
            track(target, "iterate" /* ITERATE */, ITERATE_KEY);
            // return a wrapped iterator which returns observed versions of the
            // values emitted from the real iterator
            return {
                // iterator protocol
                next() {
                    const { value, done } = innerIterator.next();
                    return done
                        ? { value, done }
                        : {
                            value: isPair ? [wrap(value[0]), wrap(value[1])] : wrap(value),
                            done
                        };
                },
                // iterable protocol
                [Symbol.iterator]() {
                    return this;
                }
            };
        };
    }
    function createReadonlyMethod(method, type) {
        return function (...args) {
            if (LOCKED) {
                {
                    const key = args[0] ? `on key "${args[0]}" ` : ``;
                    console.warn(`${capitalize(type)} operation ${key}failed: target is readonly.`, toRaw(this));
                }
                return type === "delete" /* DELETE */ ? false : this;
            }
            else {
                return method.apply(this, args);
            }
        };
    }
    const mutableInstrumentations = {
        get(key) {
            return get$1(this, key, toReactive);
        },
        get size() {
            return size(this);
        },
        has: has$1,
        add,
        set: set$1,
        delete: deleteEntry,
        clear,
        forEach: createForEach(false)
    };
    const readonlyInstrumentations = {
        get(key) {
            return get$1(this, key, toReadonly);
        },
        get size() {
            return size(this);
        },
        has: has$1,
        add: createReadonlyMethod(add, "add" /* ADD */),
        set: createReadonlyMethod(set$1, "set" /* SET */),
        delete: createReadonlyMethod(deleteEntry, "delete" /* DELETE */),
        clear: createReadonlyMethod(clear, "clear" /* CLEAR */),
        forEach: createForEach(true)
    };
    const iteratorMethods = ['keys', 'values', 'entries', Symbol.iterator];
    iteratorMethods.forEach(method => {
        mutableInstrumentations[method] = createIterableMethod(method, false);
        readonlyInstrumentations[method] = createIterableMethod(method, true);
    });
    function createInstrumentationGetter(instrumentations) {
        return (target, key, receiver) => Reflect.get(hasOwn(instrumentations, key) && key in target
            ? instrumentations
            : target, key, receiver);
    }
    const mutableCollectionHandlers = {
        get: createInstrumentationGetter(mutableInstrumentations)
    };
    const readonlyCollectionHandlers = {
        get: createInstrumentationGetter(readonlyInstrumentations)
    };
  
    // WeakMaps that store {raw <-> observed} pairs.
    const rawToReactive = new WeakMap();
    const reactiveToRaw = new WeakMap();
    const rawToReadonly = new WeakMap();
    const readonlyToRaw = new WeakMap();
    // WeakSets for values that are marked readonly or non-reactive during
    // observable creation.
    const readonlyValues = new WeakSet();
    const nonReactiveValues = new WeakSet();
    const collectionTypes = new Set([Set, Map, WeakMap, WeakSet]);
    const isObservableType = /*#__PURE__*/ makeMap('Object,Array,Map,Set,WeakMap,WeakSet');
    const canObserve = (value) => {
        return (!value._isVue &&
            !value._isVNode &&
            isObservableType(toRawType(value)) &&
            !nonReactiveValues.has(value));
    };
    function reactive(target) {
        // if trying to observe a readonly proxy, return the readonly version.
        if (readonlyToRaw.has(target)) {
            return target;
        }
        // target is explicitly marked as readonly by user
        if (readonlyValues.has(target)) {
            return readonly(target);
        }
        return createReactiveObject(target, rawToReactive, reactiveToRaw, mutableHandlers, mutableCollectionHandlers);
    }
    function readonly(target) {
        // value is a mutable observable, retrieve its original and return
        // a readonly version.
        if (reactiveToRaw.has(target)) {
            target = reactiveToRaw.get(target);
        }
        return createReactiveObject(target, rawToReadonly, readonlyToRaw, readonlyHandlers, readonlyCollectionHandlers);
    }
    // @internal
    // Return a reactive-copy of the original object, where only the root level
    // properties are readonly, and does not recursively convert returned properties.
    // This is used for creating the props proxy object for stateful components.
    function shallowReadonly(target) {
        return createReactiveObject(target, rawToReadonly, readonlyToRaw, shallowReadonlyHandlers, readonlyCollectionHandlers);
    }
    function createReactiveObject(target, toProxy, toRaw, baseHandlers, collectionHandlers) {
        if (!isObject(target)) {
            {
                console.warn(`value cannot be made reactive: ${String(target)}`);
            }
            return target;
        }
        // target already has corresponding Proxy
        let observed = toProxy.get(target);
        if (observed !== void 0) {
            return observed;
        }
        // target is already a Proxy
        if (toRaw.has(target)) {
            return target;
        }
        // only a whitelist of value types can be observed.
        if (!canObserve(target)) {
            return target;
        }
        const handlers = collectionTypes.has(target.constructor)
            ? collectionHandlers
            : baseHandlers;
        observed = new Proxy(target, handlers);
        toProxy.set(target, observed);
        toRaw.set(observed, target);
        return observed;
    }
    function isReactive(value) {
        return reactiveToRaw.has(value) || readonlyToRaw.has(value);
    }
    function isReadonly(value) {
        return readonlyToRaw.has(value);
    }
    function toRaw(observed) {
        return reactiveToRaw.get(observed) || readonlyToRaw.get(observed) || observed;
    }
    function markReadonly(value) {
        readonlyValues.add(value);
        return value;
    }
    function markNonReactive(value) {
        nonReactiveValues.add(value);
        return value;
    }
  
    const convert = (val) => isObject(val) ? reactive(val) : val;
    function isRef(r) {
        return r ? r._isRef === true : false;
    }
    function ref(raw) {
        if (isRef(raw)) {
            return raw;
        }
        raw = convert(raw);
        const r = {
            _isRef: true,
            get value() {
                track(r, "get" /* GET */, 'value');
                return raw;
            },
            set value(newVal) {
                raw = convert(newVal);
                trigger(r, "set" /* SET */, 'value',  { newValue: newVal } );
            }
        };
        return r;
    }
    function toRefs(object) {
        if ( !isReactive(object)) {
            console.warn(`toRefs() expects a reactive object but received a plain one.`);
        }
        const ret = {};
        for (const key in object) {
            ret[key] = toProxyRef(object, key);
        }
        return ret;
    }
    function toProxyRef(object, key) {
        return {
            _isRef: true,
            get value() {
                return object[key];
            },
            set value(newVal) {
                object[key] = newVal;
            }
        };
    }
  
    function computed(getterOrOptions) {
        let getter;
        let setter;
        if (isFunction(getterOrOptions)) {
            getter = getterOrOptions;
            setter =  () => {
                    console.warn('Write operation failed: computed value is readonly');
                }
                ;
        }
        else {
            getter = getterOrOptions.get;
            setter = getterOrOptions.set;
        }
        let dirty = true;
        let value;
        const runner = effect(getter, {
            lazy: true,
            // mark effect as computed so that it gets priority during trigger
            computed: true,
            scheduler: () => {
                dirty = true;
            }
        });
        return {
            _isRef: true,
            // expose effect so computed can be stopped
            effect: runner,
            get value() {
                if (dirty) {
                    value = runner();
                    dirty = false;
                }
                // When computed effects are accessed in a parent effect, the parent
                // should track all the dependencies the computed property has tracked.
                // This should also apply for chained computed properties.
                trackChildRun(runner);
                return value;
            },
            set value(newValue) {
                setter(newValue);
            }
        };
    }
    function trackChildRun(childRunner) {
        if (activeEffect === undefined) {
            return;
        }
        for (let i = 0; i < childRunner.deps.length; i++) {
            const dep = childRunner.deps[i];
            if (!dep.has(activeEffect)) {
                dep.add(activeEffect);
                activeEffect.deps.push(dep);
            }
        }
    }
  
    const ErrorTypeStrings = {
        ["bc" /* BEFORE_CREATE */]: 'beforeCreate hook',
        ["c" /* CREATED */]: 'created hook',
        ["bm" /* BEFORE_MOUNT */]: 'beforeMount hook',
        ["m" /* MOUNTED */]: 'mounted hook',
        ["bu" /* BEFORE_UPDATE */]: 'beforeUpdate hook',
        ["u" /* UPDATED */]: 'updated',
        ["bum" /* BEFORE_UNMOUNT */]: 'beforeUnmount hook',
        ["um" /* UNMOUNTED */]: 'unmounted hook',
        ["a" /* ACTIVATED */]: 'activated hook',
        ["da" /* DEACTIVATED */]: 'deactivated hook',
        ["ec" /* ERROR_CAPTURED */]: 'errorCaptured hook',
        ["rtc" /* RENDER_TRACKED */]: 'renderTracked hook',
        ["rtg" /* RENDER_TRIGGERED */]: 'renderTriggered hook',
        [0 /* SETUP_FUNCTION */]: 'setup function',
        [1 /* RENDER_FUNCTION */]: 'render function',
        [2 /* WATCH_GETTER */]: 'watcher getter',
        [3 /* WATCH_CALLBACK */]: 'watcher callback',
        [4 /* WATCH_CLEANUP */]: 'watcher cleanup function',
        [5 /* NATIVE_EVENT_HANDLER */]: 'native event handler',
        [6 /* COMPONENT_EVENT_HANDLER */]: 'component event handler',
        [7 /* DIRECTIVE_HOOK */]: 'directive hook',
        [8 /* TRANSITION_HOOK */]: 'transition hook',
        [9 /* APP_ERROR_HANDLER */]: 'app errorHandler',
        [10 /* APP_WARN_HANDLER */]: 'app warnHandler',
        [11 /* FUNCTION_REF */]: 'ref function',
        [12 /* SCHEDULER */]: 'scheduler flush. This is likely a Vue internals bug. ' +
            'Please open an issue at https://new-issue.vuejs.org/?repo=vuejs/vue'
    };
    function callWithErrorHandling(fn, instance, type, args) {
        let res;
        try {
            res = args ? fn(...args) : fn();
        }
        catch (err) {
            handleError(err, instance, type);
        }
        return res;
    }
    function callWithAsyncErrorHandling(fn, instance, type, args) {
        if (isFunction(fn)) {
            const res = callWithErrorHandling(fn, instance, type, args);
            if (res != null && !res._isVue && isPromise(res)) {
                res.catch((err) => {
                    handleError(err, instance, type);
                });
            }
            return res;
        }
        for (let i = 0; i < fn.length; i++) {
            callWithAsyncErrorHandling(fn[i], instance, type, args);
        }
    }
    function handleError(err, instance, type) {
        const contextVNode = instance ? instance.vnode : null;
        if (instance) {
            let cur = instance.parent;
            // the exposed instance is the render proxy to keep it consistent with 2.x
            const exposedInstance = instance.proxy;
            // in production the hook receives only the error code
            const errorInfo =  ErrorTypeStrings[type] ;
            while (cur) {
                const errorCapturedHooks = cur.ec;
                if (errorCapturedHooks !== null) {
                    for (let i = 0; i < errorCapturedHooks.length; i++) {
                        if (errorCapturedHooks[i](err, exposedInstance, errorInfo)) {
                            return;
                        }
                    }
                }
                cur = cur.parent;
            }
            // app-level handling
            const appErrorHandler = instance.appContext.config.errorHandler;
            if (appErrorHandler) {
                callWithErrorHandling(appErrorHandler, null, 9 /* APP_ERROR_HANDLER */, [err, exposedInstance, errorInfo]);
                return;
            }
        }
        logError(err, type, contextVNode);
    }
    // Test-only toggle for testing the unhandled warning behavior
    let forceRecover = false;
    function logError(err, type, contextVNode) {
        // default behavior is crash in prod & test, recover in dev.
        if ( (forceRecover || !false)) {
            const info = ErrorTypeStrings[type];
            if (contextVNode) {
                pushWarningContext(contextVNode);
            }
            warn(`Unhandled error${info ? ` during execution of ${info}` : ``}`);
            console.error(err);
            if (contextVNode) {
                popWarningContext();
            }
        }
        else {
            throw err;
        }
    }
  
    const stack = [];
    function pushWarningContext(vnode) {
        stack.push(vnode);
    }
    function popWarningContext() {
        stack.pop();
    }
    function warn(msg, ...args) {
        // avoid props formatting or warn handler tracking deps that might be mutated
        // during patch, leading to infinite recursion.
        pauseTracking();
        const instance = stack.length ? stack[stack.length - 1].component : null;
        const appWarnHandler = instance && instance.appContext.config.warnHandler;
        const trace = getComponentTrace();
        if (appWarnHandler) {
            callWithErrorHandling(appWarnHandler, instance, 10 /* APP_WARN_HANDLER */, [
                msg + args.join(''),
                instance && instance.proxy,
                trace
                    .map(({ vnode }) => `at <${formatComponentName(vnode)}>`)
                    .join('\n'),
                trace
            ]);
        }
        else {
            const warnArgs = [`[Vue warn]: ${msg}`, ...args];
            if (trace.length &&
                // avoid spamming console during tests
                !false) {
                warnArgs.push(`\n`, ...formatTrace(trace));
            }
            console.warn(...warnArgs);
        }
        resumeTracking();
    }
    function getComponentTrace() {
        let currentVNode = stack[stack.length - 1];
        if (!currentVNode) {
            return [];
        }
        // we can't just use the stack because it will be incomplete during updates
        // that did not start from the root. Re-construct the parent chain using
        // instance parent pointers.
        const normalizedStack = [];
        while (currentVNode) {
            const last = normalizedStack[0];
            if (last && last.vnode === currentVNode) {
                last.recurseCount++;
            }
            else {
                normalizedStack.push({
                    vnode: currentVNode,
                    recurseCount: 0
                });
            }
            const parentInstance = currentVNode.component
                .parent;
            currentVNode = parentInstance && parentInstance.vnode;
        }
        return normalizedStack;
    }
    function formatTrace(trace) {
        const logs = [];
        trace.forEach((entry, i) => {
            logs.push(...(i === 0 ? [] : [`\n`]), ...formatTraceEntry(entry));
        });
        return logs;
    }
    function formatTraceEntry({ vnode, recurseCount }) {
        const postfix = recurseCount > 0 ? `... (${recurseCount} recursive calls)` : ``;
        const open = ` at <${formatComponentName(vnode)}`;
        const close = `>` + postfix;
        const rootLabel = vnode.component.parent == null ? `(Root)` : ``;
        return vnode.props
            ? [open, ...formatProps(vnode.props), close, rootLabel]
            : [open + close, rootLabel];
    }
    const classifyRE = /(?:^|[-_])(\w)/g;
    const classify = (str) => str.replace(classifyRE, c => c.toUpperCase()).replace(/[-_]/g, '');
    function formatComponentName(vnode, file) {
        const Component = vnode.type;
        let name = isFunction(Component)
            ? Component.displayName || Component.name
            : Component.name;
        if (!name && file) {
            const match = file.match(/([^/\\]+)\.vue$/);
            if (match) {
                name = match[1];
            }
        }
        return name ? classify(name) : 'Anonymous';
    }
    function formatProps(props) {
        const res = [];
        const keys = Object.keys(props);
        keys.slice(0, 3).forEach(key => {
            res.push(...formatProp(key, props[key]));
        });
        if (keys.length > 3) {
            res.push(` ...`);
        }
        return res;
    }
    function formatProp(key, value, raw) {
        if (isString(value)) {
            value = JSON.stringify(value);
            return raw ? value : [`${key}=${value}`];
        }
        else if (typeof value === 'number' ||
            typeof value === 'boolean' ||
            value == null) {
            return raw ? value : [`${key}=${value}`];
        }
        else if (isRef(value)) {
            value = formatProp(key, toRaw(value.value), true);
            return raw ? value : [`${key}=Ref<`, value, `>`];
        }
        else if (isFunction(value)) {
            return [`${key}=fn${value.name ? `<${value.name}>` : ``}`];
        }
        else {
            value = toRaw(value);
            return raw ? value : [`${key}=`, value];
        }
    }
  
    // SFC scoped style ID management.
    // These are only used in esm-bundler builds, but since exports cannot be
    // conditional, we can only drop inner implementations in non-bundler builds.
    let currentScopeId = null;
    function pushScopeId(id) {
    }
    function popScopeId() {
    }
    function withScopeId(id) {
        {
            return undefined;
        }
    }
  
    const Fragment = Symbol( 'Fragment' );
    const Portal = Symbol( 'Portal' );
    const Text = Symbol( 'Text' );
    const Comment = Symbol( 'Comment' );
    // Since v-if and v-for are the two possible ways node structure can dynamically
    // change, once we consider v-if branches and each v-for fragment a block, we
    // can divide a template into nested blocks, and within each block the node
    // structure would be stable. This allows us to skip most children diffing
    // and only worry about the dynamic nodes (indicated by patch flags).
    const blockStack = [];
    let currentBlock = null;
    // Open a block.
    // This must be called before `createBlock`. It cannot be part of `createBlock`
    // because the children of the block are evaluated before `createBlock` itself
    // is called. The generated code typically looks like this:
    //
    //   function render() {
    //     return (openBlock(),createBlock('div', null, [...]))
    //   }
    //
    // disableTracking is true when creating a fragment block, since a fragment
    // always diffs its children.
    function openBlock(disableTracking) {
        blockStack.push((currentBlock = disableTracking ? null : []));
    }
    // Whether we should be tracking dynamic child nodes inside a block.
    // Only tracks when this value is > 0
    // We are not using a simple boolean because this value may need to be
    // incremented/decremented by nested usage of v-once (see below)
    let shouldTrack$1 = 1;
    // Block tracking sometimes needs to be disabled, for example during the
    // creation of a tree that needs to be cached by v-once. The compiler generates
    // code like this:
    //   _cache[1] || (
    //     setBlockTracking(-1),
    //     _cache[1] = createVNode(...),
    //     setBlockTracking(1),
    //     _cache[1]
    //   )
    function setBlockTracking(value) {
        shouldTrack$1 += value;
    }
    // Create a block root vnode. Takes the same exact arguments as `createVNode`.
    // A block root keeps track of dynamic nodes within the block in the
    // `dynamicChildren` array.
    function createBlock(type, props, children, patchFlag, dynamicProps) {
        // avoid a block with patchFlag tracking itself
        shouldTrack$1--;
        const vnode = createVNode(type, props, children, patchFlag, dynamicProps);
        shouldTrack$1++;
        // save current block children on the block vnode
        vnode.dynamicChildren = currentBlock || EMPTY_ARR;
        // close block
        blockStack.pop();
        currentBlock = blockStack[blockStack.length - 1] || null;
        // a block is always going to be patched, so track it as a child of its
        // parent block
        if (currentBlock !== null) {
            currentBlock.push(vnode);
        }
        return vnode;
    }
    function isVNode(value) {
        return value ? value._isVNode === true : false;
    }
    function isSameVNodeType(n1, n2) {
        return n1.type === n2.type && n1.key === n2.key;
    }
    function createVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null) {
        if ( !type) {
            warn(`Invalid vnode type when creating vnode: ${type}.`);
            type = Comment;
        }
        // class & style normalization.
        if (props !== null) {
            // for reactive or proxy objects, we need to clone it to enable mutation.
            if (isReactive(props) || SetupProxySymbol in props) {
                props = extend({}, props);
            }
            let { class: klass, style } = props;
            if (klass != null && !isString(klass)) {
                props.class = normalizeClass(klass);
            }
            if (style != null) {
                // reactive state objects need to be cloned since they are likely to be
                // mutated
                if (isReactive(style) && !isArray(style)) {
                    style = extend({}, style);
                }
                props.style = normalizeStyle(style);
            }
        }
        // encode the vnode type information into a bitmap
        const shapeFlag = isString(type)
            ? 1 /* ELEMENT */
            :  type.__isSuspense === true
                ? 64 /* SUSPENSE */
                : isObject(type)
                    ? 4 /* STATEFUL_COMPONENT */
                    : isFunction(type)
                        ? 2 /* FUNCTIONAL_COMPONENT */
                        : 0;
        const vnode = {
            _isVNode: true,
            type,
            props,
            key: (props !== null && props.key) || null,
            ref: (props !== null && props.ref) || null,
            scopeId: currentScopeId,
            children: null,
            component: null,
            suspense: null,
            dirs: null,
            transition: null,
            el: null,
            anchor: null,
            target: null,
            shapeFlag,
            patchFlag,
            dynamicProps,
            dynamicChildren: null,
            appContext: null
        };
        normalizeChildren(vnode, children);
        // presence of a patch flag indicates this node needs patching on updates.
        // component nodes also should always be patched, because even if the
        // component doesn't need to update, it needs to persist the instance on to
        // the next vnode so that it can be properly unmounted later.
        if (shouldTrack$1 > 0 &&
            currentBlock !== null &&
            (patchFlag > 0 ||
                shapeFlag & 4 /* STATEFUL_COMPONENT */ ||
                shapeFlag & 2 /* FUNCTIONAL_COMPONENT */)) {
            currentBlock.push(vnode);
        }
        return vnode;
    }
    function cloneVNode(vnode, extraProps) {
        // This is intentionally NOT using spread or extend to avoid the runtime
        // key enumeration cost.
        return {
            _isVNode: true,
            type: vnode.type,
            props: extraProps
                ? vnode.props
                    ? mergeProps(vnode.props, extraProps)
                    : extraProps
                : vnode.props,
            key: vnode.key,
            ref: vnode.ref,
            scopeId: vnode.scopeId,
            children: vnode.children,
            target: vnode.target,
            shapeFlag: vnode.shapeFlag,
            patchFlag: vnode.patchFlag,
            dynamicProps: vnode.dynamicProps,
            dynamicChildren: vnode.dynamicChildren,
            appContext: vnode.appContext,
            dirs: vnode.dirs,
            transition: vnode.transition,
            // These should technically only be non-null on mounted VNodes. However,
            // they *should* be copied for kept-alive vnodes. So we just always copy
            // them since them being non-null during a mount doesn't affect the logic as
            // they will simply be overwritten.
            component: vnode.component,
            suspense: vnode.suspense,
            el: vnode.el,
            anchor: vnode.anchor
        };
    }
    function createTextVNode(text = ' ', flag = 0) {
        return createVNode(Text, null, text, flag);
    }
    function createCommentVNode(text = '', 
    // when used as the v-else branch, the comment node must be created as a
    // block to ensure correct updates.
    asBlock = false) {
        return asBlock
            ? createBlock(Comment, null, text)
            : createVNode(Comment, null, text);
    }
    function normalizeVNode(child) {
        if (child == null) {
            // empty placeholder
            return createVNode(Comment);
        }
        else if (isArray(child)) {
            // fragment
            return createVNode(Fragment, null, child);
        }
        else if (typeof child === 'object') {
            // already vnode, this should be the most common since compiled templates
            // always produce all-vnode children arrays
            return child.el === null ? child : cloneVNode(child);
        }
        else {
            // primitive types
            return createVNode(Text, null, String(child));
        }
    }
    // optimized normalization for template-compiled render fns
    function cloneIfMounted(child) {
        return child.el === null ? child : cloneVNode(child);
    }
    function normalizeChildren(vnode, children) {
        let type = 0;
        if (children == null) {
            children = null;
        }
        else if (isArray(children)) {
            type = 16 /* ARRAY_CHILDREN */;
        }
        else if (typeof children === 'object') {
            type = 32 /* SLOTS_CHILDREN */;
        }
        else if (isFunction(children)) {
            children = { default: children };
            type = 32 /* SLOTS_CHILDREN */;
        }
        else {
            children = String(children);
            type = 8 /* TEXT_CHILDREN */;
        }
        vnode.children = children;
        vnode.shapeFlag |= type;
    }
    function normalizeStyle(value) {
        if (isArray(value)) {
            const res = {};
            for (let i = 0; i < value.length; i++) {
                const normalized = normalizeStyle(value[i]);
                if (normalized) {
                    for (const key in normalized) {
                        res[key] = normalized[key];
                    }
                }
            }
            return res;
        }
        else if (isObject(value)) {
            return value;
        }
    }
    function normalizeClass(value) {
        let res = '';
        if (isString(value)) {
            res = value;
        }
        else if (isArray(value)) {
            for (let i = 0; i < value.length; i++) {
                res += normalizeClass(value[i]) + ' ';
            }
        }
        else if (isObject(value)) {
            for (const name in value) {
                if (value[name]) {
                    res += name + ' ';
                }
            }
        }
        return res.trim();
    }
    const handlersRE = /^on|^vnode/;
    function mergeProps(...args) {
        const ret = {};
        extend(ret, args[0]);
        for (let i = 1; i < args.length; i++) {
            const toMerge = args[i];
            for (const key in toMerge) {
                if (key === 'class') {
                    ret.class = normalizeClass([ret.class, toMerge.class]);
                }
                else if (key === 'style') {
                    ret.style = normalizeStyle([ret.style, toMerge.style]);
                }
                else if (handlersRE.test(key)) {
                    // on*, vnode*
                    const existing = ret[key];
                    ret[key] = existing
                        ? [].concat(existing, toMerge[key])
                        : toMerge[key];
                }
                else {
                    ret[key] = toMerge[key];
                }
            }
        }
        return ret;
    }
  
    const queue = [];
    const postFlushCbs = [];
    const p = Promise.resolve();
    let isFlushing = false;
    let isFlushPending = false;
    const RECURSION_LIMIT = 100;
    function nextTick(fn) {
        return fn ? p.then(fn) : p;
    }
    function queueJob(job) {
        if (!queue.includes(job)) {
            queue.push(job);
            queueFlush();
        }
    }
    function queuePostFlushCb(cb) {
        if (!isArray(cb)) {
            postFlushCbs.push(cb);
        }
        else {
            postFlushCbs.push(...cb);
        }
        queueFlush();
    }
    function queueFlush() {
        if (!isFlushing && !isFlushPending) {
            isFlushPending = true;
            nextTick(flushJobs);
        }
    }
    const dedupe = (cbs) => [...new Set(cbs)];
    function flushPostFlushCbs(seen) {
        if (postFlushCbs.length) {
            const cbs = dedupe(postFlushCbs);
            postFlushCbs.length = 0;
            {
                seen = seen || new Map();
            }
            for (let i = 0; i < cbs.length; i++) {
                {
                    checkRecursiveUpdates(seen, cbs[i]);
                }
                cbs[i]();
            }
        }
    }
    function flushJobs(seen) {
        isFlushPending = false;
        isFlushing = true;
        let job;
        {
            seen = seen || new Map();
        }
        while ((job = queue.shift())) {
            {
                checkRecursiveUpdates(seen, job);
            }
            callWithErrorHandling(job, null, 12 /* SCHEDULER */);
        }
        flushPostFlushCbs(seen);
        isFlushing = false;
        // some postFlushCb queued jobs!
        // keep flushing until it drains.
        if (queue.length || postFlushCbs.length) {
            flushJobs(seen);
        }
    }
    function checkRecursiveUpdates(seen, fn) {
        if (!seen.has(fn)) {
            seen.set(fn, 1);
        }
        else {
            const count = seen.get(fn);
            if (count > RECURSION_LIMIT) {
                throw new Error('Maximum recursive updates exceeded. ' +
                    "You may have code that is mutating state in your component's " +
                    'render function or updated hook or watcher source function.');
            }
            else {
                seen.set(fn, count + 1);
            }
        }
    }
  
    // mark the current rendering instance for asset resolution (e.g.
    // resolveComponent, resolveDirective) during render
    let currentRenderingInstance = null;
    // dev only flag to track whether $attrs was used during render.
    // If $attrs was used during render then the warning for failed attrs
    // fallthrough can be suppressed.
    let accessedAttrs = false;
    function markAttrsAccessed() {
        accessedAttrs = true;
    }
    function renderComponentRoot(instance) {
        const { type: Component, vnode, proxy, withProxy, props, slots, attrs, emit } = instance;
        let result;
        currentRenderingInstance = instance;
        {
            accessedAttrs = false;
        }
        try {
            if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
                result = normalizeVNode(instance.render.call(withProxy || proxy));
            }
            else {
                // functional
                const render = Component;
                result = normalizeVNode(render.length > 1
                    ? render(props, {
                        attrs,
                        slots,
                        emit
                    })
                    : render(props, null /* we know it doesn't need it */));
            }
            // attr merging
            if (Component.props != null &&
                Component.inheritAttrs !== false &&
                attrs !== EMPTY_OBJ &&
                Object.keys(attrs).length) {
                if (result.shapeFlag & 1 /* ELEMENT */ ||
                    result.shapeFlag & 6 /* COMPONENT */) {
                    result = cloneVNode(result, attrs);
                }
                else if (true && !accessedAttrs && result.type !== Comment) {
                    warn(`Extraneous non-props attributes (${Object.keys(attrs).join(',')}) ` +
                        `were passed to component but could not be automatically inherited ` +
                        `because component renders fragment or text root nodes.`);
                }
            }
            // inherit transition data
            if (vnode.transition != null) {
                if (true &&
                    !(result.shapeFlag & 6 /* COMPONENT */) &&
                    !(result.shapeFlag & 1 /* ELEMENT */) &&
                    result.type !== Comment) {
                    warn(`Component inside <Transition> renders non-element root node ` +
                        `that cannot be animated.`);
                }
                result.transition = vnode.transition;
            }
        }
        catch (err) {
            handleError(err, instance, 1 /* RENDER_FUNCTION */);
            result = createVNode(Comment);
        }
        currentRenderingInstance = null;
        return result;
    }
    function shouldUpdateComponent(prevVNode, nextVNode, parentComponent, optimized) {
        const { props: prevProps, children: prevChildren } = prevVNode;
        const { props: nextProps, children: nextChildren, patchFlag } = nextVNode;
        if (patchFlag > 0) {
            if (patchFlag & 512 /* DYNAMIC_SLOTS */) {
                // slot content that references values that might have changed,
                // e.g. in a v-for
                return true;
            }
            if (patchFlag & 16 /* FULL_PROPS */) {
                // presence of this flag indicates props are always non-null
                return hasPropsChanged(prevProps, nextProps);
            }
            else if (patchFlag & 8 /* PROPS */) {
                const dynamicProps = nextVNode.dynamicProps;
                for (let i = 0; i < dynamicProps.length; i++) {
                    const key = dynamicProps[i];
                    if (nextProps[key] !== prevProps[key]) {
                        return true;
                    }
                }
            }
        }
        else if (!optimized) {
            // this path is only taken by manually written render functions
            // so presence of any children leads to a forced update
            if (prevChildren != null || nextChildren != null) {
                if (nextChildren == null || !nextChildren.$stable) {
                    return true;
                }
            }
            if (prevProps === nextProps) {
                return false;
            }
            if (prevProps === null) {
                return nextProps !== null;
            }
            if (nextProps === null) {
                return true;
            }
            return hasPropsChanged(prevProps, nextProps);
        }
        return false;
    }
    function hasPropsChanged(prevProps, nextProps) {
        const nextKeys = Object.keys(nextProps);
        if (nextKeys.length !== Object.keys(prevProps).length) {
            return true;
        }
        for (let i = 0; i < nextKeys.length; i++) {
            const key = nextKeys[i];
            if (nextProps[key] !== prevProps[key]) {
                return true;
            }
        }
        return false;
    }
    function updateHOCHostEl({ vnode, parent }, el // HostNode
    ) {
        while (parent && parent.subTree === vnode) {
            (vnode = parent.vnode).el = el;
            parent = parent.parent;
        }
    }
  
    // resolve raw VNode data.
    // - filter out reserved keys (key, ref, slots)
    // - extract class and style into $attrs (to be merged onto child
    //   component root)
    // - for the rest:
    //   - if has declared props: put declared ones in `props`, the rest in `attrs`
    //   - else: everything goes in `props`.
    function resolveProps(instance, rawProps, _options) {
        const hasDeclaredProps = _options != null;
        if (!rawProps && !hasDeclaredProps) {
            return;
        }
        const { 0: options, 1: needCastKeys } = normalizePropsOptions(_options);
        const props = {};
        let attrs = void 0;
        // update the instance propsProxy (passed to setup()) to trigger potential
        // changes
        const propsProxy = instance.propsProxy;
        const setProp = propsProxy
            ? (key, val) => {
                props[key] = val;
                propsProxy[key] = val;
            }
            : (key, val) => {
                props[key] = val;
            };
        // allow mutation of propsProxy (which is readonly by default)
        unlock();
        if (rawProps != null) {
            for (const key in rawProps) {
                // key, ref are reserved and never passed down
                if (key === 'key' || key === 'ref')
                    continue;
                // prop option names are camelized during normalization, so to support
                // kebab -> camel conversion here we need to camelize the key.
                const camelKey = camelize(key);
                if (hasDeclaredProps && !hasOwn(options, camelKey)) {
                    (attrs || (attrs = {}))[key] = rawProps[key];
                }
                else {
                    setProp(camelKey, rawProps[key]);
                }
            }
        }
        if (hasDeclaredProps) {
            // set default values & cast booleans
            for (let i = 0; i < needCastKeys.length; i++) {
                const key = needCastKeys[i];
                let opt = options[key];
                if (opt == null)
                    continue;
                const isAbsent = !hasOwn(props, key);
                const hasDefault = hasOwn(opt, 'default');
                const currentValue = props[key];
                // default values
                if (hasDefault && currentValue === undefined) {
                    const defaultValue = opt.default;
                    setProp(key, isFunction(defaultValue) ? defaultValue() : defaultValue);
                }
                // boolean casting
                if (opt[0 /* shouldCast */]) {
                    if (isAbsent && !hasDefault) {
                        setProp(key, false);
                    }
                    else if (opt[1 /* shouldCastTrue */] &&
                        (currentValue === '' || currentValue === hyphenate(key))) {
                        setProp(key, true);
                    }
                }
            }
            // validation
            if ( rawProps) {
                for (const key in options) {
                    let opt = options[key];
                    if (opt == null)
                        continue;
                    let rawValue;
                    if (!(key in rawProps) && hyphenate(key) in rawProps) {
                        rawValue = rawProps[hyphenate(key)];
                    }
                    else {
                        rawValue = rawProps[key];
                    }
                    validateProp(key, toRaw(rawValue), opt, !hasOwn(props, key));
                }
            }
        }
        else {
            // if component has no declared props, $attrs === $props
            attrs = props;
        }
        // in case of dynamic props, check if we need to delete keys from
        // the props proxy
        const { patchFlag } = instance.vnode;
        if (propsProxy !== null &&
            (patchFlag === 0 || patchFlag & 16 /* FULL_PROPS */)) {
            const rawInitialProps = toRaw(propsProxy);
            for (const key in rawInitialProps) {
                if (!hasOwn(props, key)) {
                    delete propsProxy[key];
                }
            }
        }
        // lock readonly
        lock();
        instance.props = props;
        instance.attrs = options ? attrs || EMPTY_OBJ : props;
    }
    const normalizationMap = new WeakMap();
    function normalizePropsOptions(raw) {
        if (!raw) {
            return [];
        }
        if (normalizationMap.has(raw)) {
            return normalizationMap.get(raw);
        }
        const options = {};
        const needCastKeys = [];
        if (isArray(raw)) {
            for (let i = 0; i < raw.length; i++) {
                if ( !isString(raw[i])) {
                    warn(`props must be strings when using array syntax.`, raw[i]);
                }
                const normalizedKey = camelize(raw[i]);
                if (normalizedKey[0] !== '$') {
                    options[normalizedKey] = EMPTY_OBJ;
                }
                else {
                    warn(`Invalid prop name: "${normalizedKey}" is a reserved property.`);
                }
            }
        }
        else {
            if ( !isObject(raw)) {
                warn(`invalid props options`, raw);
            }
            for (const key in raw) {
                const normalizedKey = camelize(key);
                if (normalizedKey[0] !== '$') {
                    const opt = raw[key];
                    const prop = (options[normalizedKey] =
                        isArray(opt) || isFunction(opt) ? { type: opt } : opt);
                    if (prop != null) {
                        const booleanIndex = getTypeIndex(Boolean, prop.type);
                        const stringIndex = getTypeIndex(String, prop.type);
                        prop[0 /* shouldCast */] = booleanIndex > -1;
                        prop[1 /* shouldCastTrue */] = booleanIndex < stringIndex;
                        // if the prop needs boolean casting or default value
                        if (booleanIndex > -1 || hasOwn(prop, 'default')) {
                            needCastKeys.push(normalizedKey);
                        }
                    }
                }
                else {
                    warn(`Invalid prop name: "${normalizedKey}" is a reserved property.`);
                }
            }
        }
        const normalized = [options, needCastKeys];
        normalizationMap.set(raw, normalized);
        return normalized;
    }
    // use function string name to check type constructors
    // so that it works across vms / iframes.
    function getType(ctor) {
        const match = ctor && ctor.toString().match(/^\s*function (\w+)/);
        return match ? match[1] : '';
    }
    function isSameType(a, b) {
        return getType(a) === getType(b);
    }
    function getTypeIndex(type, expectedTypes) {
        if (isArray(expectedTypes)) {
            for (let i = 0, len = expectedTypes.length; i < len; i++) {
                if (isSameType(expectedTypes[i], type)) {
                    return i;
                }
            }
        }
        else if (isObject(expectedTypes)) {
            return isSameType(expectedTypes, type) ? 0 : -1;
        }
        return -1;
    }
    function validateProp(name, value, prop, isAbsent) {
        const { type, required, validator } = prop;
        // required!
        if (required && isAbsent) {
            warn('Missing required prop: "' + name + '"');
            return;
        }
        // missing but optional
        if (value == null && !prop.required) {
            return;
        }
        // type check
        if (type != null && type !== true) {
            let isValid = false;
            const types = isArray(type) ? type : [type];
            const expectedTypes = [];
            // value is valid as long as one of the specified types match
            for (let i = 0; i < types.length && !isValid; i++) {
                const { valid, expectedType } = assertType(value, types[i]);
                expectedTypes.push(expectedType || '');
                isValid = valid;
            }
            if (!isValid) {
                warn(getInvalidTypeMessage(name, value, expectedTypes));
                return;
            }
        }
        // custom validator
        if (validator && !validator(value)) {
            warn('Invalid prop: custom validator check failed for prop "' + name + '".');
        }
    }
    const isSimpleType = /*#__PURE__*/ makeMap('String,Number,Boolean,Function,Symbol');
    function assertType(value, type) {
        let valid;
        const expectedType = getType(type);
        if (isSimpleType(expectedType)) {
            const t = typeof value;
            valid = t === expectedType.toLowerCase();
            // for primitive wrapper objects
            if (!valid && t === 'object') {
                valid = value instanceof type;
            }
        }
        else if (expectedType === 'Object') {
            valid = toRawType(value) === 'Object';
        }
        else if (expectedType === 'Array') {
            valid = isArray(value);
        }
        else {
            valid = value instanceof type;
        }
        return {
            valid,
            expectedType
        };
    }
    function getInvalidTypeMessage(name, value, expectedTypes) {
        let message = `Invalid prop: type check failed for prop "${name}".` +
            ` Expected ${expectedTypes.map(capitalize).join(', ')}`;
        const expectedType = expectedTypes[0];
        const receivedType = toRawType(value);
        const expectedValue = styleValue(value, expectedType);
        const receivedValue = styleValue(value, receivedType);
        // check if we need to specify expected value
        if (expectedTypes.length === 1 &&
            isExplicable(expectedType) &&
            !isBoolean(expectedType, receivedType)) {
            message += ` with value ${expectedValue}`;
        }
        message += `, got ${receivedType} `;
        // check if we need to specify received value
        if (isExplicable(receivedType)) {
            message += `with value ${receivedValue}.`;
        }
        return message;
    }
    function styleValue(value, type) {
        if (type === 'String') {
            return `"${value}"`;
        }
        else if (type === 'Number') {
            return `${Number(value)}`;
        }
        else {
            return `${value}`;
        }
    }
    function isExplicable(type) {
        const explicitTypes = ['string', 'number', 'boolean'];
        return explicitTypes.some(elem => type.toLowerCase() === elem);
    }
    function isBoolean(...args) {
        return args.some(elem => elem.toLowerCase() === 'boolean');
    }
  
    const normalizeSlotValue = (value) => isArray(value)
        ? value.map(normalizeVNode)
        : [normalizeVNode(value)];
    const normalizeSlot = (key, rawSlot) => (props) => {
        if ( currentInstance != null) {
            warn(`Slot "${key}" invoked outside of the render function: ` +
                `this will not track dependencies used in the slot. ` +
                `Invoke the slot function inside the render function instead.`);
        }
        return normalizeSlotValue(rawSlot(props));
    };
    function resolveSlots(instance, children) {
        let slots;
        if (instance.vnode.shapeFlag & 32 /* SLOTS_CHILDREN */) {
            const rawSlots = children;
            if (rawSlots._compiled) {
                // pre-normalized slots object generated by compiler
                slots = children;
            }
            else {
                slots = {};
                for (const key in rawSlots) {
                    if (key === '$stable')
                        continue;
                    const value = rawSlots[key];
                    if (isFunction(value)) {
                        slots[key] = normalizeSlot(key, value);
                    }
                    else if (value != null) {
                        {
                            warn(`Non-function value encountered for slot "${key}". ` +
                                `Prefer function slots for better performance.`);
                        }
                        const normalized = normalizeSlotValue(value);
                        slots[key] = () => normalized;
                    }
                }
            }
        }
        else if (children !== null) {
            // non slot object children (direct value) passed to a component
            if ( !isKeepAlive(instance.vnode)) {
                warn(`Non-function value encountered for default slot. ` +
                    `Prefer function slots for better performance.`);
            }
            const normalized = normalizeSlotValue(children);
            slots = { default: () => normalized };
        }
        instance.slots = slots || EMPTY_OBJ;
    }
  
    /**
    Runtime helper for applying directives to a vnode. Example usage:
  
    const comp = resolveComponent('comp')
    const foo = resolveDirective('foo')
    const bar = resolveDirective('bar')
  
    return withDirectives(h(comp), [
      [foo, this.x],
      [bar, this.y]
    ])
    */
    const isBuiltInDirective = /*#__PURE__*/ makeMap('bind,cloak,else-if,else,for,html,if,model,on,once,pre,show,slot,text');
    function validateDirectiveName(name) {
        if (isBuiltInDirective(name)) {
            warn('Do not use built-in directive ids as custom directive id: ' + name);
        }
    }
    const directiveToVnodeHooksMap = /*#__PURE__*/ [
        'beforeMount',
        'mounted',
        'beforeUpdate',
        'updated',
        'beforeUnmount',
        'unmounted'
    ].reduce((map, key) => {
        const vnodeKey = `onVnode` + key[0].toUpperCase() + key.slice(1);
        const vnodeHook = (vnode, prevVnode) => {
            const bindings = vnode.dirs;
            const prevBindings = prevVnode ? prevVnode.dirs : EMPTY_ARR;
            for (let i = 0; i < bindings.length; i++) {
                const binding = bindings[i];
                const hook = binding.dir[key];
                if (hook != null) {
                    if (prevVnode != null) {
                        binding.oldValue = prevBindings[i].value;
                    }
                    hook(vnode.el, binding, vnode, prevVnode);
                }
            }
        };
        map[key] = [vnodeKey, vnodeHook];
        return map;
    }, {});
    function withDirectives(vnode, directives) {
        const internalInstance = currentRenderingInstance;
        if (internalInstance === null) {
             warn(`withDirectives can only be used inside render functions.`);
            return vnode;
        }
        const instance = internalInstance.proxy;
        const props = vnode.props || (vnode.props = {});
        const bindings = vnode.dirs || (vnode.dirs = new Array(directives.length));
        const injected = {};
        for (let i = 0; i < directives.length; i++) {
            let [dir, value, arg, modifiers = EMPTY_OBJ] = directives[i];
            if (isFunction(dir)) {
                dir = {
                    mounted: dir,
                    updated: dir
                };
            }
            bindings[i] = {
                dir,
                instance,
                value,
                oldValue: void 0,
                arg,
                modifiers
            };
            // inject onVnodeXXX hooks
            for (const key in dir) {
                if (!injected[key]) {
                    const { 0: hookName, 1: hook } = directiveToVnodeHooksMap[key];
                    const existing = props[hookName];
                    props[hookName] = existing ? [].concat(existing, hook) : hook;
                    injected[key] = true;
                }
            }
        }
        return vnode;
    }
    function invokeDirectiveHook(hook, instance, vnode, prevVNode = null) {
        callWithAsyncErrorHandling(hook, instance, 7 /* DIRECTIVE_HOOK */, [
            vnode,
            prevVNode
        ]);
    }
  
    function createAppContext() {
        return {
            config: {
                devtools: true,
                performance: false,
                isNativeTag: NO,
                isCustomElement: NO,
                errorHandler: undefined,
                warnHandler: undefined
            },
            mixins: [],
            components: {},
            directives: {},
            provides: {}
        };
    }
    function createAppAPI(render) {
        return function createApp() {
            const context = createAppContext();
            const installedPlugins = new Set();
            let isMounted = false;
            const app = {
                get config() {
                    return context.config;
                },
                set config(v) {
                    {
                        warn(`app.config cannot be replaced. Modify individual options instead.`);
                    }
                },
                use(plugin, ...options) {
                    if (installedPlugins.has(plugin)) {
                         warn(`Plugin has already been applied to target app.`);
                    }
                    else if (isFunction(plugin)) {
                        installedPlugins.add(plugin);
                        plugin(app, ...options);
                    }
                    else if (plugin && isFunction(plugin.install)) {
                        installedPlugins.add(plugin);
                        plugin.install(app, ...options);
                    }
                    else {
                        warn(`A plugin must either be a function or an object with an "install" ` +
                            `function.`);
                    }
                    return app;
                },
                mixin(mixin) {
                    if (!context.mixins.includes(mixin)) {
                        context.mixins.push(mixin);
                    }
                    else {
                        warn('Mixin has already been applied to target app' +
                            (mixin.name ? `: ${mixin.name}` : ''));
                    }
                    return app;
                },
                component(name, component) {
                    {
                        validateComponentName(name, context.config);
                    }
                    if (!component) {
                        return context.components[name];
                    }
                    if ( context.components[name]) {
                        warn(`Component "${name}" has already been registered in target app.`);
                    }
                    context.components[name] = component;
                    return app;
                },
                directive(name, directive) {
                    {
                        validateDirectiveName(name);
                    }
                    if (!directive) {
                        return context.directives[name];
                    }
                    if ( context.directives[name]) {
                        warn(`Directive "${name}" has already been registered in target app.`);
                    }
                    context.directives[name] = directive;
                    return app;
                },
                mount(rootComponent, rootContainer, rootProps) {
                    if (!isMounted) {
                        if (rootProps != null && !isObject(rootProps)) {
                            
                                warn(`root props passed to app.mount() must be an object.`);
                            rootProps = null;
                        }
                        const vnode = createVNode(rootComponent, rootProps);
                        // store app context on the root VNode.
                        // this will be set on the root instance on initial mount.
                        vnode.appContext = context;
                        render(vnode, rootContainer);
                        isMounted = true;
                        return vnode.component.proxy;
                    }
                    else {
                        warn(`App has already been mounted. Create a new app instance instead.`);
                    }
                },
                provide(key, value) {
                    if ( key in context.provides) {
                        warn(`App already provides property with key "${key}". ` +
                            `It will be overwritten with the new value.`);
                    }
                    // TypeScript doesn't allow symbols as index type
                    // https://github.com/Microsoft/TypeScript/issues/24587
                    context.provides[key] = value;
                    return app;
                }
            };
            return app;
        };
    }
  
    // Suspense exposes a component-like API, and is treated like a component
    // in the compiler, but internally it's a special built-in type that hooks
    // directly into the renderer.
    const SuspenseImpl = {
        // In order to make Suspense tree-shakable, we need to avoid importing it
        // directly in the renderer. The renderer checks for the __isSuspense flag
        // on a vnode's type and calls the `process` method, passing in renderer
        // internals.
        __isSuspense: true,
        process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, 
        // platform-specific impl passed from renderer
        rendererInternals) {
            if (n1 == null) {
                mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, rendererInternals);
            }
            else {
                patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, optimized, rendererInternals);
            }
        }
    };
    // Force-casted public typing for h and TSX props inference
    const Suspense = ( SuspenseImpl
        );
    function mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, rendererInternals) {
        const { patch, options: { createElement } } = rendererInternals;
        const hiddenContainer = createElement('div');
        const suspense = (n2.suspense = createSuspenseBoundary(n2, parentSuspense, parentComponent, container, hiddenContainer, anchor, isSVG, optimized, rendererInternals));
        const { content, fallback } = normalizeSuspenseChildren(n2);
        suspense.subTree = content;
        suspense.fallbackTree = fallback;
        // start mounting the content subtree in an off-dom container
        patch(null, content, hiddenContainer, null, parentComponent, suspense, isSVG, optimized);
        // now check if we have encountered any async deps
        if (suspense.deps > 0) {
            // mount the fallback tree
            patch(null, fallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
            isSVG, optimized);
            n2.el = fallback.el;
        }
        else {
            // Suspense has no async deps. Just resolve.
            suspense.resolve();
        }
    }
    function patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, optimized, { patch }) {
        const suspense = (n2.suspense = n1.suspense);
        suspense.vnode = n2;
        const { content, fallback } = normalizeSuspenseChildren(n2);
        const oldSubTree = suspense.subTree;
        const oldFallbackTree = suspense.fallbackTree;
        if (!suspense.isResolved) {
            patch(oldSubTree, content, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, optimized);
            if (suspense.deps > 0) {
                // still pending. patch the fallback tree.
                patch(oldFallbackTree, fallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
                isSVG, optimized);
                n2.el = fallback.el;
            }
            // If deps somehow becomes 0 after the patch it means the patch caused an
            // async dep component to unmount and removed its dep. It will cause the
            // suspense to resolve and we don't need to do anything here.
        }
        else {
            // just normal patch inner content as a fragment
            patch(oldSubTree, content, container, anchor, parentComponent, suspense, isSVG, optimized);
            n2.el = content.el;
        }
        suspense.subTree = content;
        suspense.fallbackTree = fallback;
    }
    function createSuspenseBoundary(vnode, parent, parentComponent, container, hiddenContainer, anchor, isSVG, optimized, rendererInternals) {
        const { patch, move, unmount, next, options: { parentNode } } = rendererInternals;
        const suspense = {
            vnode,
            parent,
            parentComponent,
            isSVG,
            optimized,
            container,
            hiddenContainer,
            anchor,
            deps: 0,
            subTree: null,
            fallbackTree: null,
            isResolved: false,
            isUnmounted: false,
            effects: [],
            resolve() {
                {
                    if (suspense.isResolved) {
                        throw new Error(`resolveSuspense() is called on an already resolved suspense boundary.`);
                    }
                    if (suspense.isUnmounted) {
                        throw new Error(`resolveSuspense() is called on an already unmounted suspense boundary.`);
                    }
                }
                const { vnode, subTree, fallbackTree, effects, parentComponent, container } = suspense;
                // this is initial anchor on mount
                let { anchor } = suspense;
                // unmount fallback tree
                if (fallbackTree.el) {
                    // if the fallback tree was mounted, it may have been moved
                    // as part of a parent suspense. get the latest anchor for insertion
                    anchor = next(fallbackTree);
                    unmount(fallbackTree, parentComponent, suspense, true);
                }
                // move content from off-dom container to actual container
                move(subTree, container, anchor, 0 /* ENTER */);
                const el = (vnode.el = subTree.el);
                // suspense as the root node of a component...
                if (parentComponent && parentComponent.subTree === vnode) {
                    parentComponent.vnode.el = el;
                    updateHOCHostEl(parentComponent, el);
                }
                // check if there is a pending parent suspense
                let parent = suspense.parent;
                let hasUnresolvedAncestor = false;
                while (parent) {
                    if (!parent.isResolved) {
                        // found a pending parent suspense, merge buffered post jobs
                        // into that parent
                        parent.effects.push(...effects);
                        hasUnresolvedAncestor = true;
                        break;
                    }
                    parent = parent.parent;
                }
                // no pending parent suspense, flush all jobs
                if (!hasUnresolvedAncestor) {
                    queuePostFlushCb(effects);
                }
                suspense.isResolved = true;
                // invoke @resolve event
                const onResolve = vnode.props && vnode.props.onResolve;
                if (isFunction(onResolve)) {
                    onResolve();
                }
            },
            recede() {
                suspense.isResolved = false;
                const { vnode, subTree, fallbackTree, parentComponent, container, hiddenContainer, isSVG, optimized } = suspense;
                // move content tree back to the off-dom container
                const anchor = next(subTree);
                move(subTree, hiddenContainer, null, 1 /* LEAVE */);
                // remount the fallback tree
                patch(null, fallbackTree, container, anchor, parentComponent, null, // fallback tree will not have suspense context
                isSVG, optimized);
                const el = (vnode.el = fallbackTree.el);
                // suspense as the root node of a component...
                if (parentComponent && parentComponent.subTree === vnode) {
                    parentComponent.vnode.el = el;
                    updateHOCHostEl(parentComponent, el);
                }
                // invoke @recede event
                const onRecede = vnode.props && vnode.props.onRecede;
                if (isFunction(onRecede)) {
                    onRecede();
                }
            },
            move(container, anchor, type) {
                move(suspense.isResolved ? suspense.subTree : suspense.fallbackTree, container, anchor, type);
                suspense.container = container;
            },
            next() {
                return next(suspense.isResolved ? suspense.subTree : suspense.fallbackTree);
            },
            registerDep(instance, setupRenderEffect) {
                // suspense is already resolved, need to recede.
                // use queueJob so it's handled synchronously after patching the current
                // suspense tree
                if (suspense.isResolved) {
                    queueJob(() => {
                        suspense.recede();
                    });
                }
                suspense.deps++;
                instance
                    .asyncDep.catch(err => {
                    handleError(err, instance, 0 /* SETUP_FUNCTION */);
                })
                    .then(asyncSetupResult => {
                    // retry when the setup() promise resolves.
                    // component may have been unmounted before resolve.
                    if (instance.isUnmounted || suspense.isUnmounted) {
                        return;
                    }
                    suspense.deps--;
                    // retry from this component
                    instance.asyncResolved = true;
                    const { vnode } = instance;
                    {
                        pushWarningContext(vnode);
                    }
                    handleSetupResult(instance, asyncSetupResult, suspense);
                    setupRenderEffect(instance, suspense, vnode, 
                    // component may have been moved before resolve
                    parentNode(instance.subTree.el), next(instance.subTree), isSVG);
                    updateHOCHostEl(instance, vnode.el);
                    {
                        popWarningContext();
                    }
                    if (suspense.deps === 0) {
                        suspense.resolve();
                    }
                });
            },
            unmount(parentSuspense, doRemove) {
                suspense.isUnmounted = true;
                unmount(suspense.subTree, parentComponent, parentSuspense, doRemove);
                if (!suspense.isResolved) {
                    unmount(suspense.fallbackTree, parentComponent, parentSuspense, doRemove);
                }
            }
        };
        return suspense;
    }
    function normalizeSuspenseChildren(vnode) {
        const { shapeFlag, children } = vnode;
        if (shapeFlag & 32 /* SLOTS_CHILDREN */) {
            const { default: d, fallback } = children;
            return {
                content: normalizeVNode(isFunction(d) ? d() : d),
                fallback: normalizeVNode(isFunction(fallback) ? fallback() : fallback)
            };
        }
        else {
            return {
                content: normalizeVNode(children),
                fallback: normalizeVNode(null)
            };
        }
    }
    function queueEffectWithSuspense(fn, suspense) {
        if (suspense !== null && !suspense.isResolved) {
            if (isArray(fn)) {
                suspense.effects.push(...fn);
            }
            else {
                suspense.effects.push(fn);
            }
        }
        else {
            queuePostFlushCb(fn);
        }
    }
  
    function createDevEffectOptions(instance) {
        return {
            scheduler: queueJob,
            onTrack: instance.rtc ? e => invokeHooks(instance.rtc, e) : void 0,
            onTrigger: instance.rtg ? e => invokeHooks(instance.rtg, e) : void 0
        };
    }
    function invokeHooks(hooks, arg) {
        for (let i = 0; i < hooks.length; i++) {
            hooks[i](arg);
        }
    }
    const queuePostRenderEffect =  queueEffectWithSuspense
        ;
    /**
     * The createRenderer function accepts two generic arguments:
     * HostNode and HostElement, corresponding to Node and Element types in the
     * host environment. For example, for runtime-dom, HostNode would be the DOM
     * `Node` interface and HostElement would be the DOM `Element` interface.
     *
     * Custom renderers can pass in the platform specific types like this:
     *
     * ``` js
     * const { render, createApp } = createRenderer<Node, Element>({
     *   patchProp,
     *   ...nodeOps
     * })
     * ```
     */
    function createRenderer(options) {
        const { insert: hostInsert, remove: hostRemove, patchProp: hostPatchProp, createElement: hostCreateElement, createText: hostCreateText, createComment: hostCreateComment, setText: hostSetText, setElementText: hostSetElementText, parentNode: hostParentNode, nextSibling: hostNextSibling, querySelector: hostQuerySelector, setScopeId: hostSetScopeId } = options;
        const internals = {
            patch,
            unmount,
            move,
            next: getNextHostNode,
            options
        };
        function patch(n1, // null means this is a mount
        n2, container, anchor = null, parentComponent = null, parentSuspense = null, isSVG = false, optimized = false) {
            // patching & not same type, unmount old tree
            if (n1 != null && !isSameVNodeType(n1, n2)) {
                anchor = getNextHostNode(n1);
                unmount(n1, parentComponent, parentSuspense, true);
                n1 = null;
            }
            const { type, shapeFlag } = n2;
            switch (type) {
                case Text:
                    processText(n1, n2, container, anchor);
                    break;
                case Comment:
                    processCommentNode(n1, n2, container, anchor);
                    break;
                case Fragment:
                    processFragment(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    break;
                case Portal:
                    processPortal(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    break;
                default:
                    if (shapeFlag & 1 /* ELEMENT */) {
                        processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    }
                    else if (shapeFlag & 6 /* COMPONENT */) {
                        processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    }
                    else if ( shapeFlag & 64 /* SUSPENSE */) {
                        type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, internals);
                    }
                    else {
                        warn('Invalid HostVNode type:', n2.type, `(${typeof n2.type})`);
                    }
            }
        }
        function processText(n1, n2, container, anchor) {
            if (n1 == null) {
                hostInsert((n2.el = hostCreateText(n2.children)), container, anchor);
            }
            else {
                const el = (n2.el = n1.el);
                if (n2.children !== n1.children) {
                    hostSetText(el, n2.children);
                }
            }
        }
        function processCommentNode(n1, n2, container, anchor) {
            if (n1 == null) {
                hostInsert((n2.el = hostCreateComment(n2.children || '')), container, anchor);
            }
            else {
                // there's no support for dynamic comments
                n2.el = n1.el;
            }
        }
        function processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
            if (n1 == null) {
                mountElement(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
            }
            else {
                patchElement(n1, n2, parentComponent, parentSuspense, isSVG, optimized);
            }
            if (n2.ref !== null && parentComponent !== null) {
                setRef(n2.ref, n1 && n1.ref, parentComponent, n2.el);
            }
        }
        function mountElement(vnode, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
            const tag = vnode.type;
            isSVG = isSVG || tag === 'svg';
            const el = (vnode.el = hostCreateElement(tag, isSVG));
            const { props, shapeFlag, transition, scopeId } = vnode;
            // props
            if (props != null) {
                for (const key in props) {
                    if (isReservedProp(key))
                        continue;
                    hostPatchProp(el, key, props[key], null, isSVG);
                }
                if (props.onVnodeBeforeMount != null) {
                    invokeDirectiveHook(props.onVnodeBeforeMount, parentComponent, vnode);
                }
            }
            // children
            if (shapeFlag & 8 /* TEXT_CHILDREN */) {
                hostSetElementText(el, vnode.children);
            }
            else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
                mountChildren(vnode.children, el, null, parentComponent, parentSuspense, isSVG, optimized || vnode.dynamicChildren !== null);
            }
            if (transition != null && !transition.persisted) {
                transition.beforeEnter(el);
            }
            hostInsert(el, container, anchor);
            const vnodeMountedHook = props && props.onVnodeMounted;
            if (vnodeMountedHook != null ||
                (transition != null && !transition.persisted)) {
                queuePostRenderEffect(() => {
                    vnodeMountedHook &&
                        invokeDirectiveHook(vnodeMountedHook, parentComponent, vnode);
                    transition && !transition.persisted && transition.enter(el);
                }, parentSuspense);
            }
        }
        function mountChildren(children, container, anchor, parentComponent, parentSuspense, isSVG, optimized, start = 0) {
            for (let i = start; i < children.length; i++) {
                const child = (children[i] = optimized
                    ? cloneIfMounted(children[i])
                    : normalizeVNode(children[i]));
                patch(null, child, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
            }
        }
        function patchElement(n1, n2, parentComponent, parentSuspense, isSVG, optimized) {
            const el = (n2.el = n1.el);
            let { patchFlag, dynamicChildren } = n2;
            const oldProps = (n1 && n1.props) || EMPTY_OBJ;
            const newProps = n2.props || EMPTY_OBJ;
            if (newProps.onVnodeBeforeUpdate != null) {
                invokeDirectiveHook(newProps.onVnodeBeforeUpdate, parentComponent, n2, n1);
            }
            if (patchFlag > 0) {
                // the presence of a patchFlag means this element's render code was
                // generated by the compiler and can take the fast path.
                // in this path old node and new node are guaranteed to have the same shape
                // (i.e. at the exact same position in the source template)
                if (patchFlag & 16 /* FULL_PROPS */) {
                    // element props contain dynamic keys, full diff needed
                    patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
                }
                else {
                    // class
                    // this flag is matched when the element has dynamic class bindings.
                    if (patchFlag & 2 /* CLASS */) {
                        if (oldProps.class !== newProps.class) {
                            hostPatchProp(el, 'class', newProps.class, null, isSVG);
                        }
                    }
                    // style
                    // this flag is matched when the element has dynamic style bindings
                    if (patchFlag & 4 /* STYLE */) {
                        hostPatchProp(el, 'style', newProps.style, oldProps.style, isSVG);
                    }
                    // props
                    // This flag is matched when the element has dynamic prop/attr bindings
                    // other than class and style. The keys of dynamic prop/attrs are saved for
                    // faster iteration.
                    // Note dynamic keys like :[foo]="bar" will cause this optimization to
                    // bail out and go through a full diff because we need to unset the old key
                    if (patchFlag & 8 /* PROPS */) {
                        // if the flag is present then dynamicProps must be non-null
                        const propsToUpdate = n2.dynamicProps;
                        for (let i = 0; i < propsToUpdate.length; i++) {
                            const key = propsToUpdate[i];
                            const prev = oldProps[key];
                            const next = newProps[key];
                            if (prev !== next) {
                                hostPatchProp(el, key, next, prev, isSVG, n1.children, parentComponent, parentSuspense, unmountChildren);
                            }
                        }
                    }
                }
                // text
                // This flag is matched when the element has only dynamic text children.
                // this flag is terminal (i.e. skips children diffing).
                if (patchFlag & 1 /* TEXT */) {
                    if (n1.children !== n2.children) {
                        hostSetElementText(el, n2.children);
                    }
                    return; // terminal
                }
            }
            else if (!optimized && dynamicChildren == null) {
                // unoptimized, full diff
                patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
            }
            if (dynamicChildren != null) {
                patchBlockChildren(n1.dynamicChildren, dynamicChildren, el, parentComponent, parentSuspense, isSVG);
            }
            else if (!optimized) {
                // full diff
                patchChildren(n1, n2, el, null, parentComponent, parentSuspense, isSVG);
            }
            if (newProps.onVnodeUpdated != null) {
                queuePostRenderEffect(() => {
                    invokeDirectiveHook(newProps.onVnodeUpdated, parentComponent, n2, n1);
                }, parentSuspense);
            }
        }
        // The fast path for blocks.
        function patchBlockChildren(oldChildren, newChildren, fallbackContainer, parentComponent, parentSuspense, isSVG) {
            for (let i = 0; i < newChildren.length; i++) {
                const oldVNode = oldChildren[i];
                // Determine the container (parent element) for the patch.
                // - In the case of a Fragment, we need to provide the actual parent
                // of the Fragment itself so it can move its children.
                // - In the case of a Comment, this is likely a v-if toggle, which also
                // needs the correct parent container.
                // - In the case of a component, it could contain anything.
                // In other cases, the parent container is not actually used so we just
                // pass the block element here to avoid a DOM parentNode call.
                const container = oldVNode.type === Fragment ||
                    oldVNode.type === Comment ||
                    oldVNode.shapeFlag & 6 /* COMPONENT */
                    ? hostParentNode(oldVNode.el)
                    : fallbackContainer;
                patch(oldVNode, newChildren[i], container, null, parentComponent, parentSuspense, isSVG, true);
            }
        }
        function patchProps(el, vnode, oldProps, newProps, parentComponent, parentSuspense, isSVG) {
            if (oldProps !== newProps) {
                for (const key in newProps) {
                    if (isReservedProp(key))
                        continue;
                    const next = newProps[key];
                    const prev = oldProps[key];
                    if (next !== prev) {
                        hostPatchProp(el, key, next, prev, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
                    }
                }
                if (oldProps !== EMPTY_OBJ) {
                    for (const key in oldProps) {
                        if (!isReservedProp(key) && !(key in newProps)) {
                            hostPatchProp(el, key, null, null, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
                        }
                    }
                }
            }
        }
        let devFragmentID = 0;
        function processFragment(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
            const fragmentStartAnchor = (n2.el = n1
                ? n1.el
                : hostCreateComment( `fragment-${devFragmentID}-start` ));
            const fragmentEndAnchor = (n2.anchor = n1
                ? n1.anchor
                : hostCreateComment( `fragment-${devFragmentID}-end` ));
            let { patchFlag, dynamicChildren } = n2;
            if (patchFlag > 0) {
                optimized = true;
            }
            if (n1 == null) {
                {
                    devFragmentID++;
                }
                hostInsert(fragmentStartAnchor, container, anchor);
                hostInsert(fragmentEndAnchor, container, anchor);
                // a fragment can only have array children
                // since they are either generated by the compiler, or implicitly created
                // from arrays.
                mountChildren(n2.children, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, optimized);
            }
            else {
                if (patchFlag & 64 /* STABLE_FRAGMENT */ && dynamicChildren != null) {
                    // a stable fragment (template root or <template v-for>) doesn't need to
                    // patch children order, but it may contain dynamicChildren.
                    patchBlockChildren(n1.dynamicChildren, dynamicChildren, container, parentComponent, parentSuspense, isSVG);
                }
                else {
                    // keyed / unkeyed, or manual fragments.
                    // for keyed & unkeyed, since they are compiler generated from v-for,
                    // each child is guaranteed to be a block so the fragment will never
                    // have dynamicChildren.
                    patchChildren(n1, n2, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, optimized);
                }
            }
        }
        function processPortal(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
            const targetSelector = n2.props && n2.props.target;
            const { patchFlag, shapeFlag, children } = n2;
            if (n1 == null) {
                const target = (n2.target = isString(targetSelector)
                    ? hostQuerySelector(targetSelector)
                    : targetSelector);
                if (target != null) {
                    if (shapeFlag & 8 /* TEXT_CHILDREN */) {
                        hostSetElementText(target, children);
                    }
                    else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
                        mountChildren(children, target, null, parentComponent, parentSuspense, isSVG, optimized);
                    }
                }
                else {
                    warn('Invalid Portal target on mount:', target, `(${typeof target})`);
                }
            }
            else {
                // update content
                const target = (n2.target = n1.target);
                if (patchFlag === 1 /* TEXT */) {
                    hostSetElementText(target, children);
                }
                else if (n2.dynamicChildren) {
                    // fast path when the portal happens to be a block root
                    patchBlockChildren(n1.dynamicChildren, n2.dynamicChildren, container, parentComponent, parentSuspense, isSVG);
                }
                else if (!optimized) {
                    patchChildren(n1, n2, target, null, parentComponent, parentSuspense, isSVG);
                }
                // target changed
                if (targetSelector !== (n1.props && n1.props.target)) {
                    const nextTarget = (n2.target = isString(targetSelector)
                        ? hostQuerySelector(targetSelector)
                        : targetSelector);
                    if (nextTarget != null) {
                        // move content
                        if (shapeFlag & 8 /* TEXT_CHILDREN */) {
                            hostSetElementText(target, '');
                            hostSetElementText(nextTarget, children);
                        }
                        else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
                            for (let i = 0; i < children.length; i++) {
                                move(children[i], nextTarget, null, 2 /* REORDER */);
                            }
                        }
                    }
                    else {
                        warn('Invalid Portal target on update:', target, `(${typeof target})`);
                    }
                }
            }
            // insert an empty node as the placeholder for the portal
            processCommentNode(n1, n2, container, anchor);
        }
        function processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
            if (n1 == null) {
                if (n2.shapeFlag & 256 /* COMPONENT_KEPT_ALIVE */) {
                    parentComponent.sink.activate(n2, container, anchor);
                }
                else {
                    mountComponent(n2, container, anchor, parentComponent, parentSuspense, isSVG);
                }
            }
            else {
                const instance = (n2.component = n1.component);
                if (shouldUpdateComponent(n1, n2, parentComponent, optimized)) {
                    if (
                        instance.asyncDep &&
                        !instance.asyncResolved) {
                        // async & still pending - just update props and slots
                        // since the component's reactive effect for render isn't set-up yet
                        {
                            pushWarningContext(n2);
                        }
                        updateComponentPreRender(instance, n2);
                        {
                            popWarningContext();
                        }
                        return;
                    }
                    else {
                        // normal update
                        instance.next = n2;
                        // instance.update is the reactive effect runner.
                        instance.update();
                    }
                }
                else {
                    // no update needed. just copy over properties
                    n2.component = n1.component;
                    n2.el = n1.el;
                }
            }
            if (n2.ref !== null && parentComponent !== null) {
                if ( !(n2.shapeFlag & 4 /* STATEFUL_COMPONENT */)) {
                    pushWarningContext(n2);
                    warn(`Functional components do not support "ref" because they do not ` +
                        `have instances.`);
                    popWarningContext();
                }
                setRef(n2.ref, n1 && n1.ref, parentComponent, n2.component.proxy);
            }
        }
        function mountComponent(initialVNode, container, anchor, parentComponent, parentSuspense, isSVG) {
            const instance = (initialVNode.component = defineComponentInstance(initialVNode, parentComponent));
            {
                pushWarningContext(initialVNode);
            }
            const Comp = initialVNode.type;
            // inject renderer internals for keepAlive
            if (isKeepAlive(initialVNode)) {
                const sink = instance.sink;
                sink.renderer = internals;
                sink.parentSuspense = parentSuspense;
            }
            // resolve props and slots for setup context
            const propsOptions = Comp.props;
            resolveProps(instance, initialVNode.props, propsOptions);
            resolveSlots(instance, initialVNode.children);
            // setup stateful logic
            if (initialVNode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
                setupStatefulComponent(instance, parentSuspense);
            }
            // setup() is async. This component relies on async logic to be resolved
            // before proceeding
            if ( instance.asyncDep) {
                if (!parentSuspense) {
                    warn('async setup() is used without a suspense boundary!');
                    return;
                }
                parentSuspense.registerDep(instance, setupRenderEffect);
                // give it a placeholder
                const placeholder = (instance.subTree = createVNode(Comment));
                processCommentNode(null, placeholder, container, anchor);
                initialVNode.el = placeholder.el;
                return;
            }
            setupRenderEffect(instance, parentSuspense, initialVNode, container, anchor, isSVG);
            {
                popWarningContext();
            }
        }
        function setupRenderEffect(instance, parentSuspense, initialVNode, container, anchor, isSVG) {
            // create reactive effect for rendering
            instance.update = effect(function componentEffect() {
                if (!instance.isMounted) {
                    const subTree = (instance.subTree = renderComponentRoot(instance));
                    // beforeMount hook
                    if (instance.bm !== null) {
                        invokeHooks(instance.bm);
                    }
                    patch(null, subTree, container, anchor, instance, parentSuspense, isSVG);
                    initialVNode.el = subTree.el;
                    // mounted hook
                    if (instance.m !== null) {
                        queuePostRenderEffect(instance.m, parentSuspense);
                    }
                    // activated hook for keep-alive roots.
                    if (instance.a !== null &&
                        instance.vnode.shapeFlag & 128 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
                        queuePostRenderEffect(instance.a, parentSuspense);
                    }
                    instance.isMounted = true;
                }
                else {
                    // updateComponent
                    // This is triggered by mutation of component's own state (next: null)
                    // OR parent calling processComponent (next: HostVNode)
                    const { next } = instance;
                    {
                        pushWarningContext(next || instance.vnode);
                    }
                    if (next !== null) {
                        updateComponentPreRender(instance, next);
                    }
                    const nextTree = renderComponentRoot(instance);
                    const prevTree = instance.subTree;
                    instance.subTree = nextTree;
                    // beforeUpdate hook
                    if (instance.bu !== null) {
                        invokeHooks(instance.bu);
                    }
                    // reset refs
                    // only needed if previous patch had refs
                    if (instance.refs !== EMPTY_OBJ) {
                        instance.refs = {};
                    }
                    patch(prevTree, nextTree, 
                    // parent may have changed if it's in a portal
                    hostParentNode(prevTree.el), 
                    // anchor may have changed if it's in a fragment
                    getNextHostNode(prevTree), instance, parentSuspense, isSVG);
                    instance.vnode.el = nextTree.el;
                    if (next === null) {
                        // self-triggered update. In case of HOC, update parent component
                        // vnode el. HOC is indicated by parent instance's subTree pointing
                        // to child component's vnode
                        updateHOCHostEl(instance, nextTree.el);
                    }
                    // updated hook
                    if (instance.u !== null) {
                        queuePostRenderEffect(instance.u, parentSuspense);
                    }
                    {
                        popWarningContext();
                    }
                }
            },  createDevEffectOptions(instance) );
        }
        function updateComponentPreRender(instance, nextVNode) {
            nextVNode.component = instance;
            instance.vnode = nextVNode;
            instance.next = null;
            resolveProps(instance, nextVNode.props, nextVNode.type.props);
            resolveSlots(instance, nextVNode.children);
        }
        function patchChildren(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized = false) {
            const c1 = n1 && n1.children;
            const prevShapeFlag = n1 ? n1.shapeFlag : 0;
            const c2 = n2.children;
            const { patchFlag, shapeFlag } = n2;
            if (patchFlag === -1 /* BAIL */) {
                optimized = false;
            }
            // fast path
            if (patchFlag > 0) {
                if (patchFlag & 128 /* KEYED_FRAGMENT */) {
                    // this could be either fully-keyed or mixed (some keyed some not)
                    // presence of patchFlag means children are guaranteed to be arrays
                    patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    return;
                }
                else if (patchFlag & 256 /* UNKEYED_FRAGMENT */) {
                    // unkeyed
                    patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    return;
                }
            }
            // children has 3 possibilities: text, array or no children.
            if (shapeFlag & 8 /* TEXT_CHILDREN */) {
                // text children fast path
                if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
                    unmountChildren(c1, parentComponent, parentSuspense);
                }
                if (c2 !== c1) {
                    hostSetElementText(container, c2);
                }
            }
            else {
                if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
                    // prev children was array
                    if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
                        // two arrays, cannot assume anything, do full diff
                        patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    }
                    else {
                        // no new children, just unmount old
                        unmountChildren(c1, parentComponent, parentSuspense, true);
                    }
                }
                else {
                    // prev children was text OR null
                    // new children is array OR null
                    if (prevShapeFlag & 8 /* TEXT_CHILDREN */) {
                        hostSetElementText(container, '');
                    }
                    // mount new if array
                    if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
                        mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
                    }
                }
            }
        }
        function patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized) {
            c1 = c1 || EMPTY_ARR;
            c2 = c2 || EMPTY_ARR;
            const oldLength = c1.length;
            const newLength = c2.length;
            const commonLength = Math.min(oldLength, newLength);
            let i;
            for (i = 0; i < commonLength; i++) {
                const nextChild = (c2[i] = optimized
                    ? cloneIfMounted(c2[i])
                    : normalizeVNode(c2[i]));
                patch(c1[i], nextChild, container, null, parentComponent, parentSuspense, isSVG, optimized);
            }
            if (oldLength > newLength) {
                // remove old
                unmountChildren(c1, parentComponent, parentSuspense, true, commonLength);
            }
            else {
                // mount new
                mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, optimized, commonLength);
            }
        }
        // can be all-keyed or mixed
        function patchKeyedChildren(c1, c2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized) {
            let i = 0;
            const l2 = c2.length;
            let e1 = c1.length - 1; // prev ending index
            let e2 = l2 - 1; // next ending index
            // 1. sync from start
            // (a b) c
            // (a b) d e
            while (i <= e1 && i <= e2) {
                const n1 = c1[i];
                const n2 = (c2[i] = optimized
                    ? cloneIfMounted(c2[i])
                    : normalizeVNode(c2[i]));
                if (isSameVNodeType(n1, n2)) {
                    patch(n1, n2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized);
                }
                else {
                    break;
                }
                i++;
            }
            // 2. sync from end
            // a (b c)
            // d e (b c)
            while (i <= e1 && i <= e2) {
                const n1 = c1[e1];
                const n2 = (c2[e2] = optimized
                    ? cloneIfMounted(c2[e2])
                    : normalizeVNode(c2[e2]));
                if (isSameVNodeType(n1, n2)) {
                    patch(n1, n2, container, parentAnchor, parentComponent, parentSuspense, isSVG, optimized);
                }
                else {
                    break;
                }
                e1--;
                e2--;
            }
            // 3. common sequence + mount
            // (a b)
            // (a b) c
            // i = 2, e1 = 1, e2 = 2
            // (a b)
            // c (a b)
            // i = 0, e1 = -1, e2 = 0
            if (i > e1) {
                if (i <= e2) {
                    const nextPos = e2 + 1;
                    const anchor = nextPos < l2 ? c2[nextPos].el : parentAnchor;
                    while (i <= e2) {
                        patch(null, (c2[i] = optimized
                            ? cloneIfMounted(c2[i])
                            : normalizeVNode(c2[i])), container, anchor, parentComponent, parentSuspense, isSVG);
                        i++;
                    }
                }
            }
            // 4. common sequence + unmount
            // (a b) c
            // (a b)
            // i = 2, e1 = 2, e2 = 1
            // a (b c)
            // (b c)
            // i = 0, e1 = 0, e2 = -1
            else if (i > e2) {
                while (i <= e1) {
                    unmount(c1[i], parentComponent, parentSuspense, true);
                    i++;
                }
            }
            // 5. unknown sequence
            // [i ... e1 + 1]: a b [c d e] f g
            // [i ... e2 + 1]: a b [e d c h] f g
            // i = 2, e1 = 4, e2 = 5
            else {
                const s1 = i; // prev starting index
                const s2 = i; // next starting index
                // 5.1 build key:index map for newChildren
                const keyToNewIndexMap = new Map();
                for (i = s2; i <= e2; i++) {
                    const nextChild = (c2[i] = optimized
                        ? cloneIfMounted(c2[i])
                        : normalizeVNode(c2[i]));
                    if (nextChild.key != null) {
                        if ( keyToNewIndexMap.has(nextChild.key)) {
                            warn(`Duplicate keys found during update:`, JSON.stringify(nextChild.key), `Make sure keys are unique.`);
                        }
                        keyToNewIndexMap.set(nextChild.key, i);
                    }
                }
                // 5.2 loop through old children left to be patched and try to patch
                // matching nodes & remove nodes that are no longer present
                let j;
                let patched = 0;
                const toBePatched = e2 - s2 + 1;
                let moved = false;
                // used to track whether any node has moved
                let maxNewIndexSoFar = 0;
                // works as Map<newIndex, oldIndex>
                // Note that oldIndex is offset by +1
                // and oldIndex = 0 is a special value indicating the new node has
                // no corresponding old node.
                // used for determining longest stable subsequence
                const newIndexToOldIndexMap = new Array(toBePatched);
                for (i = 0; i < toBePatched; i++)
                    newIndexToOldIndexMap[i] = 0;
                for (i = s1; i <= e1; i++) {
                    const prevChild = c1[i];
                    if (patched >= toBePatched) {
                        // all new children have been patched so this can only be a removal
                        unmount(prevChild, parentComponent, parentSuspense, true);
                        continue;
                    }
                    let newIndex;
                    if (prevChild.key != null) {
                        newIndex = keyToNewIndexMap.get(prevChild.key);
                    }
                    else {
                        // key-less node, try to locate a key-less node of the same type
                        for (j = s2; j <= e2; j++) {
                            if (newIndexToOldIndexMap[j - s2] === 0 &&
                                isSameVNodeType(prevChild, c2[j])) {
                                newIndex = j;
                                break;
                            }
                        }
                    }
                    if (newIndex === undefined) {
                        unmount(prevChild, parentComponent, parentSuspense, true);
                    }
                    else {
                        newIndexToOldIndexMap[newIndex - s2] = i + 1;
                        if (newIndex >= maxNewIndexSoFar) {
                            maxNewIndexSoFar = newIndex;
                        }
                        else {
                            moved = true;
                        }
                        patch(prevChild, c2[newIndex], container, null, parentComponent, parentSuspense, isSVG, optimized);
                        patched++;
                    }
                }
                // 5.3 move and mount
                // generate longest stable subsequence only when nodes have moved
                const increasingNewIndexSequence = moved
                    ? getSequence(newIndexToOldIndexMap)
                    : EMPTY_ARR;
                j = increasingNewIndexSequence.length - 1;
                // looping backwards so that we can use last patched node as anchor
                for (i = toBePatched - 1; i >= 0; i--) {
                    const nextIndex = s2 + i;
                    const nextChild = c2[nextIndex];
                    const anchor = nextIndex + 1 < l2
                        ? c2[nextIndex + 1].el
                        : parentAnchor;
                    if (newIndexToOldIndexMap[i] === 0) {
                        // mount new
                        patch(null, nextChild, container, anchor, parentComponent, parentSuspense, isSVG);
                    }
                    else if (moved) {
                        // move if:
                        // There is no stable subsequence (e.g. a reverse)
                        // OR current node is not among the stable sequence
                        if (j < 0 || i !== increasingNewIndexSequence[j]) {
                            move(nextChild, container, anchor, 2 /* REORDER */);
                        }
                        else {
                            j--;
                        }
                    }
                }
            }
        }
        function move(vnode, container, anchor, type, parentSuspense = null) {
            if (vnode.shapeFlag & 6 /* COMPONENT */) {
                move(vnode.component.subTree, container, anchor, type);
                return;
            }
            if ( vnode.shapeFlag & 64 /* SUSPENSE */) {
                vnode.suspense.move(container, anchor, type);
                return;
            }
            if (vnode.type === Fragment) {
                hostInsert(vnode.el, container, anchor);
                const children = vnode.children;
                for (let i = 0; i < children.length; i++) {
                    move(children[i], container, anchor, type);
                }
                hostInsert(vnode.anchor, container, anchor);
            }
            else {
                // Plain element
                const { el, transition, shapeFlag } = vnode;
                const needTransition = type !== 2 /* REORDER */ &&
                    shapeFlag & 1 /* ELEMENT */ &&
                    transition != null;
                if (needTransition) {
                    if (type === 0 /* ENTER */) {
                        transition.beforeEnter(el);
                        hostInsert(el, container, anchor);
                        queuePostRenderEffect(() => transition.enter(el), parentSuspense);
                    }
                    else {
                        const { leave, delayLeave, afterLeave } = transition;
                        const remove = () => hostInsert(el, container, anchor);
                        const performLeave = () => {
                            leave(el, () => {
                                remove();
                                afterLeave && afterLeave();
                            });
                        };
                        if (delayLeave) {
                            delayLeave(el, remove, performLeave);
                        }
                        else {
                            performLeave();
                        }
                    }
                }
                else {
                    hostInsert(el, container, anchor);
                }
            }
        }
        function unmount(vnode, parentComponent, parentSuspense, doRemove) {
            const { props, ref, children, dynamicChildren, shapeFlag } = vnode;
            // unset ref
            if (ref !== null && parentComponent !== null) {
                setRef(ref, null, parentComponent, null);
            }
            if (shapeFlag & 6 /* COMPONENT */) {
                if (shapeFlag & 128 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
                    parentComponent.sink.deactivate(vnode);
                }
                else {
                    unmountComponent(vnode.component, parentSuspense, doRemove);
                }
                return;
            }
            if ( shapeFlag & 64 /* SUSPENSE */) {
                vnode.suspense.unmount(parentSuspense, doRemove);
                return;
            }
            if (props != null && props.onVnodeBeforeUnmount != null) {
                invokeDirectiveHook(props.onVnodeBeforeUnmount, parentComponent, vnode);
            }
            if (dynamicChildren != null) {
                // fast path for block nodes: only need to unmount dynamic children.
                unmountChildren(dynamicChildren, parentComponent, parentSuspense);
            }
            else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
                unmountChildren(children, parentComponent, parentSuspense);
            }
            if (doRemove) {
                remove(vnode);
            }
            if (props != null && props.onVnodeUnmounted != null) {
                queuePostRenderEffect(() => {
                    invokeDirectiveHook(props.onVnodeUnmounted, parentComponent, vnode);
                }, parentSuspense);
            }
        }
        function remove(vnode) {
            const { type, el, anchor, transition } = vnode;
            if (type === Fragment) {
                removeFragment(el, anchor);
                return;
            }
            const performRemove = () => {
                hostRemove(el);
                if (transition != null &&
                    !transition.persisted &&
                    transition.afterLeave) {
                    transition.afterLeave();
                }
            };
            if (vnode.shapeFlag & 1 /* ELEMENT */ &&
                transition != null &&
                !transition.persisted) {
                const { leave, delayLeave } = transition;
                const performLeave = () => leave(el, performRemove);
                if (delayLeave) {
                    delayLeave(vnode.el, performRemove, performLeave);
                }
                else {
                    performLeave();
                }
            }
            else {
                performRemove();
            }
        }
        function removeFragment(cur, end) {
            // For fragments, directly remove all contained DOM nodes.
            // (fragment child nodes cannot have transition)
            let next;
            while (cur !== end) {
                next = hostNextSibling(cur);
                hostRemove(cur);
                cur = next;
            }
            hostRemove(end);
        }
        function unmountComponent(instance, parentSuspense, doRemove) {
            const { bum, effects, update, subTree, um, da, isDeactivated } = instance;
            // beforeUnmount hook
            if (bum !== null) {
                invokeHooks(bum);
            }
            if (effects !== null) {
                for (let i = 0; i < effects.length; i++) {
                    stop(effects[i]);
                }
            }
            // update may be null if a component is unmounted before its async
            // setup has resolved.
            if (update !== null) {
                stop(update);
                unmount(subTree, instance, parentSuspense, doRemove);
            }
            // unmounted hook
            if (um !== null) {
                queuePostRenderEffect(um, parentSuspense);
            }
            // deactivated hook
            if (da !== null &&
                !isDeactivated &&
                instance.vnode.shapeFlag & 128 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
                queuePostRenderEffect(da, parentSuspense);
            }
            queuePostFlushCb(() => {
                instance.isUnmounted = true;
            });
            // A component with async dep inside a pending suspense is unmounted before
            // its async dep resolves. This should remove the dep from the suspense, and
            // cause the suspense to resolve immediately if that was the last dep.
            if (
                parentSuspense !== null &&
                !parentSuspense.isResolved &&
                !parentSuspense.isUnmounted &&
                instance.asyncDep !== null &&
                !instance.asyncResolved) {
                parentSuspense.deps--;
                if (parentSuspense.deps === 0) {
                    parentSuspense.resolve();
                }
            }
        }
        function unmountChildren(children, parentComponent, parentSuspense, doRemove, start = 0) {
            for (let i = start; i < children.length; i++) {
                unmount(children[i], parentComponent, parentSuspense, doRemove);
            }
        }
        function getNextHostNode(vnode) {
            if (vnode.shapeFlag & 6 /* COMPONENT */) {
                return getNextHostNode(vnode.component.subTree);
            }
            if ( vnode.shapeFlag & 64 /* SUSPENSE */) {
                return vnode.suspense.next();
            }
            return hostNextSibling((vnode.anchor || vnode.el));
        }
        function setRef(ref, oldRef, parent, value) {
            const refs = parent.refs === EMPTY_OBJ ? (parent.refs = {}) : parent.refs;
            const renderContext = toRaw(parent.renderContext);
            // unset old ref
            if (oldRef !== null && oldRef !== ref) {
                if (isString(oldRef)) {
                    refs[oldRef] = null;
                    const oldSetupRef = renderContext[oldRef];
                    if (isRef(oldSetupRef)) {
                        oldSetupRef.value = null;
                    }
                }
                else if (isRef(oldRef)) {
                    oldRef.value = null;
                }
            }
            if (isString(ref)) {
                const setupRef = renderContext[ref];
                if (isRef(setupRef)) {
                    setupRef.value = value;
                }
                refs[ref] = value;
            }
            else if (isRef(ref)) {
                ref.value = value;
            }
            else if (isFunction(ref)) {
                callWithErrorHandling(ref, parent, 11 /* FUNCTION_REF */, [value, refs]);
            }
            else {
                warn('Invalid template ref type:', value, `(${typeof value})`);
            }
        }
        const render = (vnode, container) => {
            if (vnode == null) {
                if (container._vnode) {
                    unmount(container._vnode, null, null, true);
                }
            }
            else {
                patch(container._vnode || null, vnode, container);
            }
            flushPostFlushCbs();
            container._vnode = vnode;
        };
        return {
            render,
            createApp: createAppAPI(render)
        };
    }
    // https://en.wikipedia.org/wiki/Longest_increasing_subsequence
    function getSequence(arr) {
        const p = arr.slice();
        const result = [0];
        let i, j, u, v, c;
        const len = arr.length;
        for (i = 0; i < len; i++) {
            const arrI = arr[i];
            if (arrI !== 0) {
                j = result[result.length - 1];
                if (arr[j] < arrI) {
                    p[i] = j;
                    result.push(i);
                    continue;
                }
                u = 0;
                v = result.length - 1;
                while (u < v) {
                    c = ((u + v) / 2) | 0;
                    if (arr[result[c]] < arrI) {
                        u = c + 1;
                    }
                    else {
                        v = c;
                    }
                }
                if (arrI < arr[result[u]]) {
                    if (u > 0) {
                        p[i] = result[u - 1];
                    }
                    result[u] = i;
                }
            }
        }
        u = result.length;
        v = result[u - 1];
        while (u-- > 0) {
            result[u] = v;
            v = p[v];
        }
        return result;
    }
  
    function useTransitionState() {
        const state = {
            isMounted: false,
            isLeaving: false,
            isUnmounting: false,
            leavingVNodes: new Map()
        };
        onMounted(() => {
            state.isMounted = true;
        });
        onBeforeUnmount(() => {
            state.isUnmounting = true;
        });
        return state;
    }
    const BaseTransitionImpl = {
        name: `BaseTransition`,
        setup(props, { slots }) {
            const instance = getCurrentInstance();
            const state = useTransitionState();
            return () => {
                const children = slots.default && slots.default();
                if (!children || !children.length) {
                    return;
                }
                // warn multiple elements
                if ( children.length > 1) {
                    warn('<transition> can only be used on a single element or component. Use ' +
                        '<transition-group> for lists.');
                }
                // there's no need to track reactivity for these props so use the raw
                // props for a bit better perf
                const rawProps = toRaw(props);
                const { mode } = rawProps;
                // check mode
                if ( mode && !['in-out', 'out-in', 'default'].includes(mode)) {
                    warn(`invalid <transition> mode: ${mode}`);
                }
                // at this point children has a guaranteed length of 1.
                const child = children[0];
                if (state.isLeaving) {
                    return emptyPlaceholder(child);
                }
                // in the case of <transition><keep-alive/></transition>, we need to
                // compare the type of the kept-alive children.
                const innerChild = getKeepAliveChild(child);
                if (!innerChild) {
                    return emptyPlaceholder(child);
                }
                const enterHooks = (innerChild.transition = resolveTransitionHooks(innerChild, rawProps, state, instance));
                const oldChild = instance.subTree;
                const oldInnerChild = oldChild && getKeepAliveChild(oldChild);
                // handle mode
                if (oldInnerChild &&
                    oldInnerChild.type !== Comment &&
                    !isSameVNodeType(innerChild, oldInnerChild)) {
                    const prevHooks = oldInnerChild.transition;
                    const leavingHooks = resolveTransitionHooks(oldInnerChild, rawProps, state, instance);
                    // update old tree's hooks in case of dynamic transition
                    setTransitionHooks(oldInnerChild, leavingHooks);
                    // switching between different views
                    if (mode === 'out-in') {
                        state.isLeaving = true;
                        // return placeholder node and queue update when leave finishes
                        leavingHooks.afterLeave = () => {
                            state.isLeaving = false;
                            instance.update();
                        };
                        return emptyPlaceholder(child);
                    }
                    else if (mode === 'in-out') {
                        delete prevHooks.delayedLeave;
                        leavingHooks.delayLeave = (el, earlyRemove, delayedLeave) => {
                            const leavingVNodesCache = getLeavingNodesForType(state, oldInnerChild);
                            leavingVNodesCache[String(oldInnerChild.key)] = oldInnerChild;
                            // early removal callback
                            el._leaveCb = () => {
                                earlyRemove();
                                el._leaveCb = undefined;
                                delete enterHooks.delayedLeave;
                            };
                            enterHooks.delayedLeave = delayedLeave;
                        };
                    }
                }
                return child;
            };
        }
    };
    {
        BaseTransitionImpl.props = {
            mode: String,
            appear: Boolean,
            persisted: Boolean,
            // enter
            onBeforeEnter: Function,
            onEnter: Function,
            onAfterEnter: Function,
            onEnterCancelled: Function,
            // leave
            onBeforeLeave: Function,
            onLeave: Function,
            onAfterLeave: Function,
            onLeaveCancelled: Function
        };
    }
    // export the public type for h/tsx inference
    // also to avoid inline import() in generated d.ts files
    const BaseTransition = BaseTransitionImpl;
    function getLeavingNodesForType(state, vnode) {
        const { leavingVNodes } = state;
        let leavingVNodesCache = leavingVNodes.get(vnode.type);
        if (!leavingVNodesCache) {
            leavingVNodesCache = Object.create(null);
            leavingVNodes.set(vnode.type, leavingVNodesCache);
        }
        return leavingVNodesCache;
    }
    // The transition hooks are attached to the vnode as vnode.transition
    // and will be called at appropriate timing in the renderer.
    function resolveTransitionHooks(vnode, { appear, persisted = false, onBeforeEnter, onEnter, onAfterEnter, onEnterCancelled, onBeforeLeave, onLeave, onAfterLeave, onLeaveCancelled }, state, instance) {
        const key = String(vnode.key);
        const leavingVNodesCache = getLeavingNodesForType(state, vnode);
        const callHook = (hook, args) => {
            hook &&
                callWithAsyncErrorHandling(hook, instance, 8 /* TRANSITION_HOOK */, args);
        };
        const hooks = {
            persisted,
            beforeEnter(el) {
                if (!appear && !state.isMounted) {
                    return;
                }
                // for same element (v-show)
                if (el._leaveCb) {
                    el._leaveCb(true /* cancelled */);
                }
                // for toggled element with same key (v-if)
                const leavingVNode = leavingVNodesCache[key];
                if (leavingVNode &&
                    isSameVNodeType(vnode, leavingVNode) &&
                    leavingVNode.el._leaveCb) {
                    // force early removal (not cancelled)
                    leavingVNode.el._leaveCb();
                }
                callHook(onBeforeEnter, [el]);
            },
            enter(el) {
                if (!appear && !state.isMounted) {
                    return;
                }
                let called = false;
                const afterEnter = (el._enterCb = (cancelled) => {
                    if (called)
                        return;
                    called = true;
                    if (cancelled) {
                        callHook(onEnterCancelled, [el]);
                    }
                    else {
                        callHook(onAfterEnter, [el]);
                    }
                    if (hooks.delayedLeave) {
                        hooks.delayedLeave();
                    }
                    el._enterCb = undefined;
                });
                if (onEnter) {
                    onEnter(el, afterEnter);
                }
                else {
                    afterEnter();
                }
            },
            leave(el, remove) {
                const key = String(vnode.key);
                if (el._enterCb) {
                    el._enterCb(true /* cancelled */);
                }
                if (state.isUnmounting) {
                    return remove();
                }
                callHook(onBeforeLeave, [el]);
                let called = false;
                const afterLeave = (el._leaveCb = (cancelled) => {
                    if (called)
                        return;
                    called = true;
                    remove();
                    if (cancelled) {
                        callHook(onLeaveCancelled, [el]);
                    }
                    else {
                        callHook(onAfterLeave, [el]);
                    }
                    el._leaveCb = undefined;
                    if (leavingVNodesCache[key] === vnode) {
                        delete leavingVNodesCache[key];
                    }
                });
                leavingVNodesCache[key] = vnode;
                if (onLeave) {
                    onLeave(el, afterLeave);
                }
                else {
                    afterLeave();
                }
            }
        };
        return hooks;
    }
    // the placeholder really only handles one special case: KeepAlive
    // in the case of a KeepAlive in a leave phase we need to return a KeepAlive
    // placeholder with empty content to avoid the KeepAlive instance from being
    // unmounted.
    function emptyPlaceholder(vnode) {
        if (isKeepAlive(vnode)) {
            vnode = cloneVNode(vnode);
            vnode.children = null;
            return vnode;
        }
    }
    function getKeepAliveChild(vnode) {
        return isKeepAlive(vnode)
            ? vnode.children
                ? vnode.children[0]
                : undefined
            : vnode;
    }
    function setTransitionHooks(vnode, hooks) {
        if (vnode.shapeFlag & 6 /* COMPONENT */ && vnode.component) {
            setTransitionHooks(vnode.component.subTree, hooks);
        }
        else {
            vnode.transition = hooks;
        }
    }
  
    const isKeepAlive = (vnode) => vnode.type.__isKeepAlive;
    const KeepAliveImpl = {
        name: `KeepAlive`,
        // Marker for special handling inside the renderer. We are not using a ===
        // check directly on KeepAlive in the renderer, because importing it directly
        // would prevent it from being tree-shaken.
        __isKeepAlive: true,
        props: {
            include: [String, RegExp, Array],
            exclude: [String, RegExp, Array],
            max: [String, Number]
        },
        setup(props, { slots }) {
            const cache = new Map();
            const keys = new Set();
            let current = null;
            const instance = getCurrentInstance();
            // KeepAlive communicates with the instantiated renderer via the "sink"
            // where the renderer passes in platform-specific functions, and the
            // KeepAlive instance exposes activate/deactivate implementations.
            // The whole point of this is to avoid importing KeepAlive directly in the
            // renderer to facilitate tree-shaking.
            const sink = instance.sink;
            const { renderer: { move, unmount: _unmount, options: { createElement } }, parentSuspense } = sink;
            const storageContainer = createElement('div');
            sink.activate = (vnode, container, anchor) => {
                move(vnode, container, anchor, 0 /* ENTER */, parentSuspense);
                queuePostRenderEffect(() => {
                    const component = vnode.component;
                    component.isDeactivated = false;
                    if (component.a !== null) {
                        invokeHooks(component.a);
                    }
                }, parentSuspense);
            };
            sink.deactivate = (vnode) => {
                move(vnode, storageContainer, null, 1 /* LEAVE */, parentSuspense);
                queuePostRenderEffect(() => {
                    const component = vnode.component;
                    if (component.da !== null) {
                        invokeHooks(component.da);
                    }
                    component.isDeactivated = true;
                }, parentSuspense);
            };
            function unmount(vnode) {
                // reset the shapeFlag so it can be properly unmounted
                vnode.shapeFlag = 4 /* STATEFUL_COMPONENT */;
                _unmount(vnode, instance, parentSuspense);
            }
            function pruneCache(filter) {
                cache.forEach((vnode, key) => {
                    const name = getName(vnode.type);
                    if (name && (!filter || !filter(name))) {
                        pruneCacheEntry(key);
                    }
                });
            }
            function pruneCacheEntry(key) {
                const cached = cache.get(key);
                if (!current || cached.type !== current.type) {
                    unmount(cached);
                }
                else if (current) {
                    // current active instance should no longer be kept-alive.
                    // we can't unmount it now but it might be later, so reset its flag now.
                    current.shapeFlag = 4 /* STATEFUL_COMPONENT */;
                }
                cache.delete(key);
                keys.delete(key);
            }
            watch(() => [props.include, props.exclude], ([include, exclude]) => {
                include && pruneCache(name => matches(include, name));
                exclude && pruneCache(name => matches(exclude, name));
            }, { lazy: true });
            onBeforeUnmount(() => {
                cache.forEach(unmount);
            });
            return () => {
                if (!slots.default) {
                    return null;
                }
                const children = slots.default();
                let vnode = children[0];
                if (children.length > 1) {
                    {
                        warn(`KeepAlive should contain exactly one component child.`);
                    }
                    current = null;
                    return children;
                }
                else if (!isVNode(vnode) ||
                    !(vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */)) {
                    current = null;
                    return vnode;
                }
                const comp = vnode.type;
                const name = getName(comp);
                const { include, exclude, max } = props;
                if ((include && (!name || !matches(include, name))) ||
                    (exclude && name && matches(exclude, name))) {
                    return vnode;
                }
                const key = vnode.key == null ? comp : vnode.key;
                const cached = cache.get(key);
                // clone vnode if it's reused because we are going to mutate it
                if (vnode.el) {
                    vnode = cloneVNode(vnode);
                }
                cache.set(key, vnode);
                if (cached) {
                    // copy over mounted state
                    vnode.el = cached.el;
                    vnode.anchor = cached.anchor;
                    vnode.component = cached.component;
                    if (vnode.transition) {
                        // recursively update transition hooks on subTree
                        setTransitionHooks(vnode, vnode.transition);
                    }
                    // avoid vnode being mounted as fresh
                    vnode.shapeFlag |= 256 /* COMPONENT_KEPT_ALIVE */;
                    // make this key the freshest
                    keys.delete(key);
                    keys.add(key);
                }
                else {
                    keys.add(key);
                    // prune oldest entry
                    if (max && keys.size > parseInt(max, 10)) {
                        pruneCacheEntry(Array.from(keys)[0]);
                    }
                }
                // avoid vnode being unmounted
                vnode.shapeFlag |= 128 /* COMPONENT_SHOULD_KEEP_ALIVE */;
                current = vnode;
                return vnode;
            };
        }
    };
    // export the public type for h/tsx inference
    // also to avoid inline import() in generated d.ts files
    const KeepAlive = KeepAliveImpl;
    function getName(comp) {
        return comp.displayName || comp.name;
    }
    function matches(pattern, name) {
        if (isArray(pattern)) {
            return pattern.some((p) => matches(p, name));
        }
        else if (isString(pattern)) {
            return pattern.split(',').indexOf(name) > -1;
        }
        else if (pattern.test) {
            return pattern.test(name);
        }
        /* istanbul ignore next */
        return false;
    }
    function onActivated(hook, target) {
        registerKeepAliveHook(hook, "a" /* ACTIVATED */, target);
    }
    function onDeactivated(hook, target) {
        registerKeepAliveHook(hook, "da" /* DEACTIVATED */, target);
    }
    function registerKeepAliveHook(hook, type, target = currentInstance) {
        // cache the deactivate branch check wrapper for injected hooks so the same
        // hook can be properly deduped by the scheduler. "__wdc" stands for "with
        // deactivation check".
        const wrappedHook = hook.__wdc ||
            (hook.__wdc = () => {
                // only fire the hook if the target instance is NOT in a deactivated branch.
                let current = target;
                while (current) {
                    if (current.isDeactivated) {
                        return;
                    }
                    current = current.parent;
                }
                hook();
            });
        injectHook(type, wrappedHook, target);
        // In addition to registering it on the target instance, we walk up the parent
        // chain and register it on all ancestor instances that are keep-alive roots.
        // This avoids the need to walk the entire component tree when invoking these
        // hooks, and more importantly, avoids the need to track child components in
        // arrays.
        if (target) {
            let current = target.parent;
            while (current && current.parent) {
                if (current.parent.type === KeepAliveImpl) {
                    injectToKeepAliveRoot(wrappedHook, type, target, current);
                }
                current = current.parent;
            }
        }
    }
    function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {
        injectHook(type, hook, keepAliveRoot, true /* prepend */);
        onUnmounted(() => {
            const hooks = keepAliveRoot[type];
            hooks.splice(hooks.indexOf(hook), 1);
        }, target);
    }
  
    function injectHook(type, hook, target = currentInstance, prepend = false) {
        if (target) {
            const hooks = target[type] || (target[type] = []);
            // cache the error handling wrapper for injected hooks so the same hook
            // can be properly deduped by the scheduler. "__weh" stands for "with error
            // handling".
            const wrappedHook = hook.__weh ||
                (hook.__weh = (...args) => {
                    if (target.isUnmounted) {
                        return;
                    }
                    // disable tracking inside all lifecycle hooks
                    // since they can potentially be called inside effects.
                    pauseTracking();
                    // Set currentInstance during hook invocation.
                    // This assumes the hook does not synchronously trigger other hooks, which
                    // can only be false when the user does something really funky.
                    setCurrentInstance(target);
                    const res = callWithAsyncErrorHandling(hook, target, type, args);
                    setCurrentInstance(null);
                    resumeTracking();
                    return res;
                });
            if (prepend) {
                hooks.unshift(wrappedHook);
            }
            else {
                hooks.push(wrappedHook);
            }
        }
        else {
            const apiName = `on${capitalize(ErrorTypeStrings[type].replace(/ hook$/, ''))}`;
            warn(`${apiName} is called when there is no active component instance to be ` +
                `associated with. ` +
                `Lifecycle injection APIs can only be used during execution of setup().` +
                ( ` If you are using async setup(), make sure to register lifecycle ` +
                        `hooks before the first await statement.`
                    ));
        }
    }
    const createHook = (lifecycle) => (hook, target = currentInstance) => injectHook(lifecycle, hook, target);
    const onBeforeMount = createHook("bm" /* BEFORE_MOUNT */);
    const onMounted = createHook("m" /* MOUNTED */);
    const onBeforeUpdate = createHook("bu" /* BEFORE_UPDATE */);
    const onUpdated = createHook("u" /* UPDATED */);
    const onBeforeUnmount = createHook("bum" /* BEFORE_UNMOUNT */);
    const onUnmounted = createHook("um" /* UNMOUNTED */);
    const onRenderTriggered = createHook("rtg" /* RENDER_TRIGGERED */);
    const onRenderTracked = createHook("rtc" /* RENDER_TRACKED */);
    const onErrorCaptured = createHook("ec" /* ERROR_CAPTURED */);
  
    const invoke = (fn) => fn();
    // implementation
    function watch(effectOrSource, cbOrOptions, options) {
        if (isFunction(cbOrOptions)) {
            // effect callback as 2nd argument - this is a source watcher
            return doWatch(effectOrSource, cbOrOptions, options);
        }
        else {
            // 2nd argument is either missing or an options object
            // - this is a simple effect watcher
            return doWatch(effectOrSource, null, cbOrOptions);
        }
    }
    function doWatch(source, cb, { lazy, deep, flush, onTrack, onTrigger } = EMPTY_OBJ) {
        const instance = currentInstance;
        const suspense = currentSuspense;
        let getter;
        if (isArray(source)) {
            getter = () => source.map(s => isRef(s)
                ? s.value
                : callWithErrorHandling(s, instance, 2 /* WATCH_GETTER */));
        }
        else if (isRef(source)) {
            getter = () => source.value;
        }
        else if (cb) {
            // getter with cb
            getter = () => callWithErrorHandling(source, instance, 2 /* WATCH_GETTER */);
        }
        else {
            // no cb -> simple effect
            getter = () => {
                if (instance && instance.isUnmounted) {
                    return;
                }
                if (cleanup) {
                    cleanup();
                }
                return callWithErrorHandling(source, instance, 3 /* WATCH_CALLBACK */, [registerCleanup]);
            };
        }
        if (deep) {
            const baseGetter = getter;
            getter = () => traverse(baseGetter());
        }
        let cleanup;
        const registerCleanup = (fn) => {
            cleanup = runner.options.onStop = () => {
                callWithErrorHandling(fn, instance, 4 /* WATCH_CLEANUP */);
            };
        };
        let oldValue = isArray(source) ? [] : undefined;
        const applyCb = cb
            ? () => {
                if (instance && instance.isUnmounted) {
                    return;
                }
                const newValue = runner();
                if (deep || hasChanged(newValue, oldValue)) {
                    // cleanup before running cb again
                    if (cleanup) {
                        cleanup();
                    }
                    callWithAsyncErrorHandling(cb, instance, 3 /* WATCH_CALLBACK */, [
                        newValue,
                        oldValue,
                        registerCleanup
                    ]);
                    oldValue = newValue;
                }
            }
            : void 0;
        let scheduler;
        if (flush === 'sync') {
            scheduler = invoke;
        }
        else if (flush === 'pre') {
            scheduler = job => {
                if (!instance || instance.vnode.el != null) {
                    queueJob(job);
                }
                else {
                    // with 'pre' option, the first call must happen before
                    // the component is mounted so it is called synchronously.
                    job();
                }
            };
        }
        else {
            scheduler = job => {
                queuePostRenderEffect(job, suspense);
            };
        }
        const runner = effect(getter, {
            lazy: true,
            // so it runs before component update effects in pre flush mode
            computed: true,
            onTrack,
            onTrigger,
            scheduler: applyCb ? () => scheduler(applyCb) : scheduler
        });
        if (lazy && cb) {
            oldValue = runner();
        }
        else {
            if ( lazy && !cb) {
                warn(`watch() lazy option is only respected when using the ` +
                    `watch(getter, callback) signature.`);
            }
            if (applyCb) {
                scheduler(applyCb);
            }
            else {
                scheduler(runner);
            }
        }
        recordEffect(runner);
        return () => {
            stop(runner);
        };
    }
    // this.$watch
    function instanceWatch(source, cb, options) {
        const ctx = this.proxy;
        const getter = isString(source) ? () => ctx[source] : source.bind(ctx);
        const stop = watch(getter, cb.bind(ctx), options);
        onBeforeUnmount(stop, this);
        return stop;
    }
    function traverse(value, seen = new Set()) {
        if (!isObject(value) || seen.has(value)) {
            return;
        }
        seen.add(value);
        if (isArray(value)) {
            for (let i = 0; i < value.length; i++) {
                traverse(value[i], seen);
            }
        }
        else if (value instanceof Map) {
            value.forEach((v, key) => {
                // to register mutation dep for existing keys
                traverse(value.get(key), seen);
            });
        }
        else if (value instanceof Set) {
            value.forEach(v => {
                traverse(v, seen);
            });
        }
        else {
            for (const key in value) {
                traverse(value[key], seen);
            }
        }
        return value;
    }
  
    const publicPropertiesMap = {
        $: i => i,
        $el: i => i.vnode.el,
        $cache: i => i.renderCache || (i.renderCache = []),
        $data: i => i.data,
        $props: i => i.propsProxy,
        $attrs: i => i.attrs,
        $slots: i => i.slots,
        $refs: i => i.refs,
        $parent: i => i.parent,
        $root: i => i.root,
        $emit: i => i.emit,
        $options: i => i.type,
        $forceUpdate: i => () => queueJob(i.update),
        $nextTick: () => nextTick,
        $watch: i => instanceWatch.bind(i)
    };
    const PublicInstanceProxyHandlers = {
        get(target, key) {
            // fast path for unscopables when using `with` block
            if ( key === Symbol.unscopables) {
                return;
            }
            const { renderContext, data, props, propsProxy, accessCache, type, sink } = target;
            // data / props / renderContext
            // This getter gets called for every property access on the render context
            // during render and is a major hotspot. The most expensive part of this
            // is the multiple hasOwn() calls. It's much faster to do a simple property
            // access on a plain object, so we use an accessCache object (with null
            // prototype) to memoize what access type a key corresponds to.
            if (key[0] !== '$') {
                const n = accessCache[key];
                if (n !== undefined) {
                    switch (n) {
                        case 0 /* DATA */:
                            return data[key];
                        case 1 /* CONTEXT */:
                            return renderContext[key];
                        case 2 /* PROPS */:
                            return propsProxy[key];
                    }
                }
                else if (data !== EMPTY_OBJ && hasOwn(data, key)) {
                    accessCache[key] = 0 /* DATA */;
                    return data[key];
                }
                else if (hasOwn(renderContext, key)) {
                    accessCache[key] = 1 /* CONTEXT */;
                    return renderContext[key];
                }
                else if (hasOwn(props, key)) {
                    // only cache props access if component has declared (thus stable) props
                    if (type.props != null) {
                        accessCache[key] = 2 /* PROPS */;
                    }
                    // return the value from propsProxy for ref unwrapping and readonly
                    return propsProxy[key];
                }
            }
            // public $xxx properties & user-attached properties (sink)
            const publicGetter = publicPropertiesMap[key];
            if (publicGetter != null) {
                if ( key === '$attrs') {
                    markAttrsAccessed();
                }
                return publicGetter(target);
            }
            else if (hasOwn(sink, key)) {
                return sink[key];
            }
            else if ( currentRenderingInstance != null) {
                warn(`Property ${JSON.stringify(key)} was accessed during render ` +
                    `but is not defined on instance.`);
            }
        },
        has(target, key) {
            const { data, accessCache, renderContext, type, sink } = target;
            return (accessCache[key] !== undefined ||
                (data !== EMPTY_OBJ && hasOwn(data, key)) ||
                hasOwn(renderContext, key) ||
                (type.props != null && hasOwn(type.props, key)) ||
                hasOwn(publicPropertiesMap, key) ||
                hasOwn(sink, key));
        },
        set(target, key, value) {
            const { data, renderContext } = target;
            if (data !== EMPTY_OBJ && hasOwn(data, key)) {
                data[key] = value;
            }
            else if (hasOwn(renderContext, key)) {
                renderContext[key] = value;
            }
            else if (key[0] === '$' && key.slice(1) in target) {
                
                    warn(`Attempting to mutate public property "${key}". ` +
                        `Properties starting with $ are reserved and readonly.`, target);
                return false;
            }
            else if (key in target.props) {
                
                    warn(`Attempting to mutate prop "${key}". Props are readonly.`, target);
                return false;
            }
            else {
                target.sink[key] = value;
            }
            return true;
        }
    };
    const runtimeCompiledRenderProxyHandlers = {
        ...PublicInstanceProxyHandlers,
        has(_target, key) {
            return key[0] !== '_' && !isGloballyWhitelisted(key);
        }
    };
  
    function provide(key, value) {
        if (!currentInstance) {
            {
                warn(`provide() can only be used inside setup().`);
            }
        }
        else {
            let provides = currentInstance.provides;
            // by default an instance inherits its parent's provides object
            // but when it needs to provide values of its own, it creates its
            // own provides object using parent provides object as prototype.
            // this way in `inject` we can simply look up injections from direct
            // parent and let the prototype chain do the work.
            const parentProvides = currentInstance.parent && currentInstance.parent.provides;
            if (parentProvides === provides) {
                provides = currentInstance.provides = Object.create(parentProvides);
            }
            // TS doesn't allow symbol as index type
            provides[key] = value;
        }
    }
    function inject(key, defaultValue) {
        // fallback to `currentRenderingInstance` so that this can be called in
        // a functional component
        const instance = currentInstance || currentRenderingInstance;
        if (instance) {
            const provides = instance.provides;
            if (key in provides) {
                // TS doesn't allow symbol as index type
                return provides[key];
            }
            else if (defaultValue !== undefined) {
                return defaultValue;
            }
            else {
                warn(`injection "${String(key)}" not found.`);
            }
        }
        else {
            warn(`inject() can only be used inside setup() or functional components.`);
        }
    }
  
    function createDuplicateChecker() {
        const cache = Object.create(null);
        return (type, key) => {
            if (cache[key]) {
                warn(`${type} property "${key}" is already defined in ${cache[key]}.`);
            }
            else {
                cache[key] = type;
            }
        };
    }
    function applyOptions(instance, options, asMixin = false) {
        const renderContext = instance.renderContext === EMPTY_OBJ
            ? (instance.renderContext = reactive({}))
            : instance.renderContext;
        const ctx = instance.proxy;
        const { 
        // composition
        mixins, extends: extendsOptions, 
        // state
        props: propsOptions, data: dataOptions, computed: computedOptions, methods, watch: watchOptions, provide: provideOptions, inject: injectOptions, 
        // assets
        components, directives, 
        // lifecycle
        beforeMount, mounted, beforeUpdate, updated, activated, deactivated, beforeUnmount, unmounted, renderTracked, renderTriggered, errorCaptured } = options;
        const globalMixins = instance.appContext.mixins;
        // call it only during dev
        const checkDuplicateProperties =  createDuplicateChecker() ;
        // applyOptions is called non-as-mixin once per instance
        if (!asMixin) {
            callSyncHook('beforeCreate', options, ctx, globalMixins);
            // global mixins are applied first
            applyMixins(instance, globalMixins);
        }
        // extending a base component...
        if (extendsOptions) {
            applyOptions(instance, extendsOptions, true);
        }
        // local mixins
        if (mixins) {
            applyMixins(instance, mixins);
        }
        if ( propsOptions) {
            for (const key in propsOptions) {
                checkDuplicateProperties("Props" /* PROPS */, key);
            }
        }
        // state options
        if (dataOptions) {
            const data = isFunction(dataOptions) ? dataOptions.call(ctx) : dataOptions;
            if (!isObject(data)) {
                 warn(`data() should return an object.`);
            }
            else if (instance.data === EMPTY_OBJ) {
                {
                    for (const key in data) {
                        checkDuplicateProperties("Data" /* DATA */, key);
                    }
                }
                instance.data = reactive(data);
            }
            else {
                // existing data: this is a mixin or extends.
                extend(instance.data, data);
            }
        }
        if (computedOptions) {
            for (const key in computedOptions) {
                const opt = computedOptions[key];
                 checkDuplicateProperties("Computed" /* COMPUTED */, key);
                if (isFunction(opt)) {
                    renderContext[key] = computed$1(opt.bind(ctx));
                }
                else {
                    const { get, set } = opt;
                    if (isFunction(get)) {
                        renderContext[key] = computed$1({
                            get: get.bind(ctx),
                            set: isFunction(set)
                                ? set.bind(ctx)
                                :  () => {
                                        warn(`Computed property "${key}" was assigned to but it has no setter.`);
                                    }
                                    
                        });
                    }
                    else {
                        warn(`Computed property "${key}" has no getter.`);
                    }
                }
            }
        }
        if (methods) {
            for (const key in methods) {
                const methodHandler = methods[key];
                if (isFunction(methodHandler)) {
                     checkDuplicateProperties("Methods" /* METHODS */, key);
                    renderContext[key] = methodHandler.bind(ctx);
                }
                else {
                    warn(`Method "${key}" has type "${typeof methodHandler}" in the component definition. ` +
                        `Did you reference the function correctly?`);
                }
            }
        }
        if (watchOptions) {
            for (const key in watchOptions) {
                createWatcher(watchOptions[key], renderContext, ctx, key);
            }
        }
        if (provideOptions) {
            const provides = isFunction(provideOptions)
                ? provideOptions.call(ctx)
                : provideOptions;
            for (const key in provides) {
                provide(key, provides[key]);
            }
        }
        if (injectOptions) {
            if (isArray(injectOptions)) {
                for (let i = 0; i < injectOptions.length; i++) {
                    const key = injectOptions[i];
                     checkDuplicateProperties("Inject" /* INJECT */, key);
                    renderContext[key] = inject(key);
                }
            }
            else {
                for (const key in injectOptions) {
                     checkDuplicateProperties("Inject" /* INJECT */, key);
                    const opt = injectOptions[key];
                    if (isObject(opt)) {
                        renderContext[key] = inject(opt.from, opt.default);
                    }
                    else {
                        renderContext[key] = inject(opt);
                    }
                }
            }
        }
        // asset options
        if (components) {
            extend(instance.components, components);
        }
        if (directives) {
            extend(instance.directives, directives);
        }
        // lifecycle options
        if (!asMixin) {
            callSyncHook('created', options, ctx, globalMixins);
        }
        if (beforeMount) {
            onBeforeMount(beforeMount.bind(ctx));
        }
        if (mounted) {
            onMounted(mounted.bind(ctx));
        }
        if (beforeUpdate) {
            onBeforeUpdate(beforeUpdate.bind(ctx));
        }
        if (updated) {
            onUpdated(updated.bind(ctx));
        }
        if (activated) {
            onActivated(activated.bind(ctx));
        }
        if (deactivated) {
            onDeactivated(deactivated.bind(ctx));
        }
        if (errorCaptured) {
            onErrorCaptured(errorCaptured.bind(ctx));
        }
        if (renderTracked) {
            onRenderTracked(renderTracked.bind(ctx));
        }
        if (renderTriggered) {
            onRenderTriggered(renderTriggered.bind(ctx));
        }
        if (beforeUnmount) {
            onBeforeUnmount(beforeUnmount.bind(ctx));
        }
        if (unmounted) {
            onUnmounted(unmounted.bind(ctx));
        }
    }
    function callSyncHook(name, options, ctx, globalMixins) {
        callHookFromMixins(name, globalMixins, ctx);
        const baseHook = options.extends && options.extends[name];
        if (baseHook) {
            baseHook.call(ctx);
        }
        const mixins = options.mixins;
        if (mixins) {
            callHookFromMixins(name, mixins, ctx);
        }
        const selfHook = options[name];
        if (selfHook) {
            selfHook.call(ctx);
        }
    }
    function callHookFromMixins(name, mixins, ctx) {
        for (let i = 0; i < mixins.length; i++) {
            const fn = mixins[i][name];
            if (fn) {
                fn.call(ctx);
            }
        }
    }
    function applyMixins(instance, mixins) {
        for (let i = 0; i < mixins.length; i++) {
            applyOptions(instance, mixins[i], true);
        }
    }
    function createWatcher(raw, renderContext, ctx, key) {
        const getter = () => ctx[key];
        if (isString(raw)) {
            const handler = renderContext[raw];
            if (isFunction(handler)) {
                watch(getter, handler);
            }
            else {
                warn(`Invalid watch handler specified by key "${raw}"`, handler);
            }
        }
        else if (isFunction(raw)) {
            watch(getter, raw.bind(ctx));
        }
        else if (isObject(raw)) {
            if (isArray(raw)) {
                raw.forEach(r => createWatcher(r, renderContext, ctx, key));
            }
            else {
                watch(getter, raw.handler.bind(ctx), raw);
            }
        }
        else {
            warn(`Invalid watch option: "${key}"`);
        }
    }
  
    const emptyAppContext = createAppContext();
    function defineComponentInstance(vnode, parent) {
        // inherit parent app context - or - if root, adopt from root vnode
        const appContext = (parent ? parent.appContext : vnode.appContext) || emptyAppContext;
        const instance = {
            vnode,
            parent,
            appContext,
            type: vnode.type,
            root: null,
            next: null,
            subTree: null,
            update: null,
            render: null,
            proxy: null,
            withProxy: null,
            propsProxy: null,
            setupContext: null,
            effects: null,
            provides: parent ? parent.provides : Object.create(appContext.provides),
            accessCache: null,
            renderCache: null,
            // setup context properties
            renderContext: EMPTY_OBJ,
            data: EMPTY_OBJ,
            props: EMPTY_OBJ,
            attrs: EMPTY_OBJ,
            slots: EMPTY_OBJ,
            refs: EMPTY_OBJ,
            // per-instance asset storage (mutable during options resolution)
            components: Object.create(appContext.components),
            directives: Object.create(appContext.directives),
            // async dependency management
            asyncDep: null,
            asyncResult: null,
            asyncResolved: false,
            // user namespace for storing whatever the user assigns to `this`
            // can also be used as a wildcard storage for ad-hoc injections internally
            sink: {},
            // lifecycle hooks
            // not using enums here because it results in computed properties
            isMounted: false,
            isUnmounted: false,
            isDeactivated: false,
            bc: null,
            c: null,
            bm: null,
            m: null,
            bu: null,
            u: null,
            um: null,
            bum: null,
            da: null,
            a: null,
            rtg: null,
            rtc: null,
            ec: null,
            emit: (event, ...args) => {
                const props = instance.vnode.props || EMPTY_OBJ;
                const handler = props[`on${event}`] || props[`on${capitalize(event)}`];
                if (handler) {
                    callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
                }
            }
        };
        instance.root = parent ? parent.root : instance;
        return instance;
    }
    let currentInstance = null;
    let currentSuspense = null;
    const getCurrentInstance = () => currentInstance || currentRenderingInstance;
    const setCurrentInstance = (instance) => {
        currentInstance = instance;
    };
    const isBuiltInTag = /*#__PURE__*/ makeMap('slot,component');
    function validateComponentName(name, config) {
        const appIsNativeTag = config.isNativeTag || NO;
        if (isBuiltInTag(name) || appIsNativeTag(name)) {
            warn('Do not use built-in or reserved HTML elements as component id: ' + name);
        }
    }
    function setupStatefulComponent(instance, parentSuspense) {
        const Component = instance.type;
        {
            if (Component.name) {
                validateComponentName(Component.name, instance.appContext.config);
            }
            if (Component.components) {
                const names = Object.keys(Component.components);
                for (let i = 0; i < names.length; i++) {
                    validateComponentName(names[i], instance.appContext.config);
                }
            }
            if (Component.directives) {
                const names = Object.keys(Component.directives);
                for (let i = 0; i < names.length; i++) {
                    validateDirectiveName(names[i]);
                }
            }
        }
        // 0. create render proxy property access cache
        instance.accessCache = {};
        // 1. create public instance / render proxy
        instance.proxy = new Proxy(instance, PublicInstanceProxyHandlers);
        // 2. create props proxy
        // the propsProxy is a reactive AND readonly proxy to the actual props.
        // it will be updated in resolveProps() on updates before render
        const propsProxy = (instance.propsProxy = shallowReadonly(instance.props));
        // 3. call setup()
        const { setup } = Component;
        if (setup) {
            const setupContext = (instance.setupContext =
                setup.length > 1 ? createSetupContext(instance) : null);
            currentInstance = instance;
            currentSuspense = parentSuspense;
            const setupResult = callWithErrorHandling(setup, instance, 0 /* SETUP_FUNCTION */, [propsProxy, setupContext]);
            currentInstance = null;
            currentSuspense = null;
            if (isPromise(setupResult)) {
                {
                    // async setup returned Promise.
                    // bail here and wait for re-entry.
                    instance.asyncDep = setupResult;
                }
            }
            else {
                handleSetupResult(instance, setupResult, parentSuspense);
            }
        }
        else {
            finishComponentSetup(instance, parentSuspense);
        }
    }
    function handleSetupResult(instance, setupResult, parentSuspense) {
        if (isFunction(setupResult)) {
            // setup returned an inline render function
            instance.render = setupResult;
        }
        else if (isObject(setupResult)) {
            if ( isVNode(setupResult)) {
                warn(`setup() should not return VNodes directly - ` +
                    `return a render function instead.`);
            }
            // setup returned bindings.
            // assuming a render function compiled from template is present.
            instance.renderContext = reactive(setupResult);
        }
        else if ( setupResult !== undefined) {
            warn(`setup() should return an object. Received: ${setupResult === null ? 'null' : typeof setupResult}`);
        }
        finishComponentSetup(instance, parentSuspense);
    }
    let compile$1;
    // exported method uses any to avoid d.ts relying on the compiler types.
    function registerRuntimeCompiler(_compile) {
        compile$1 = _compile;
    }
    function finishComponentSetup(instance, parentSuspense) {
        const Component = instance.type;
        if (!instance.render) {
            if ( Component.template && !Component.render) {
                // true ensures `compile` is provided
                Component.render = compile$1(Component.template, {
                    isCustomElement: instance.appContext.config.isCustomElement || NO
                });
                Component.render.isRuntimeCompiled = true;
            }
            if ( !Component.render) {
                /* istanbul ignore if */
                {
                    warn(`Component is missing${ ` template or` } render function.`);
                }
            }
            instance.render = (Component.render || NOOP);
            // for runtime-compiled render functions using `with` blocks, the render
            // proxy used needs a different `has` handler which is more performant and
            // also only allows a whitelist of globals to fallthrough.
            if ( instance.render.isRuntimeCompiled) {
                instance.withProxy = new Proxy(instance, runtimeCompiledRenderProxyHandlers);
            }
        }
        // support for 2.x options
        {
            currentInstance = instance;
            currentSuspense = parentSuspense;
            applyOptions(instance, Component);
            currentInstance = null;
            currentSuspense = null;
        }
        if (instance.renderContext === EMPTY_OBJ) {
            instance.renderContext = reactive({});
        }
    }
    // used to identify a setup context proxy
    const SetupProxySymbol = Symbol();
    const SetupProxyHandlers = {};
    ['attrs', 'slots'].forEach((type) => {
        SetupProxyHandlers[type] = {
            get: (instance, key) => instance[type][key],
            has: (instance, key) => key === SetupProxySymbol || key in instance[type],
            ownKeys: instance => Reflect.ownKeys(instance[type]),
            // this is necessary for ownKeys to work properly
            getOwnPropertyDescriptor: (instance, key) => Reflect.getOwnPropertyDescriptor(instance[type], key),
            set: () => false,
            deleteProperty: () => false
        };
    });
    function createSetupContext(instance) {
        const context = {
            // attrs & slots are non-reactive, but they need to always expose
            // the latest values (instance.xxx may get replaced during updates) so we
            // need to expose them through a proxy
            attrs: new Proxy(instance, SetupProxyHandlers.attrs),
            slots: new Proxy(instance, SetupProxyHandlers.slots),
            emit: instance.emit
        };
        return  Object.freeze(context) ;
    }
  
    // record effects created during a component's setup() so that they can be
    // stopped when the component unmounts
    function recordEffect(effect) {
        if (currentInstance) {
            (currentInstance.effects || (currentInstance.effects = [])).push(effect);
        }
    }
    function computed$1(getterOrOptions) {
        const c = computed(getterOrOptions);
        recordEffect(c.effect);
        return c;
    }
  
    // implementation, close to no-op
    function defineComponent(options) {
        return isFunction(options) ? { setup: options } : options;
    }
  
    // Actual implementation
    function h(type, propsOrChildren, children) {
        if (arguments.length === 2) {
            if (isObject(propsOrChildren) && !isArray(propsOrChildren)) {
                // single vnode without props
                if (isVNode(propsOrChildren)) {
                    return createVNode(type, null, [propsOrChildren]);
                }
                // props without children
                return createVNode(type, propsOrChildren);
            }
            else {
                // omit props
                return createVNode(type, null, propsOrChildren);
            }
        }
        else {
            if (isVNode(children)) {
                children = [children];
            }
            return createVNode(type, propsOrChildren, children);
        }
    }
  
    // For runtime consumption
    const PublicShapeFlags = {
        ELEMENT: 1 /* ELEMENT */,
        FUNCTIONAL_COMPONENT: 2 /* FUNCTIONAL_COMPONENT */,
        STATEFUL_COMPONENT: 4 /* STATEFUL_COMPONENT */,
        TEXT_CHILDREN: 8 /* TEXT_CHILDREN */,
        ARRAY_CHILDREN: 16 /* ARRAY_CHILDREN */,
        SLOTS_CHILDREN: 32 /* SLOTS_CHILDREN */,
        SUSPENSE: 64 /* SUSPENSE */,
        COMPONENT_SHOULD_KEEP_ALIVE: 128 /* COMPONENT_SHOULD_KEEP_ALIVE */,
        COMPONENT_KEPT_ALIVE: 256 /* COMPONENT_KEPT_ALIVE */,
        COMPONENT: 6 /* COMPONENT */
    };
  
    function useCSSModule(name = '$style') {
        const instance = getCurrentInstance();
        if (!instance) {
             warn(`useCSSModule must be called inside setup()`);
            return EMPTY_OBJ;
        }
        const modules = instance.type.__cssModules;
        if (!modules) {
             warn(`Current instance does not have CSS modules injected.`);
            return EMPTY_OBJ;
        }
        const mod = modules[name];
        if (!mod) {
            
                warn(`Current instance does not have CSS module named "${name}".`);
            return EMPTY_OBJ;
        }
        return mod;
    }
  
    const COMPONENTS = 'components';
    const DIRECTIVES = 'directives';
    function resolveComponent(name) {
        return resolveAsset(COMPONENTS, name);
    }
    function resolveDynamicComponent(component, 
    // Dynamic component resolution has to be called inline due to potential
    // access to scope variables. When called inside slots it will be inside
    // a different component's render cycle, so the owner instance must be passed
    // in explicitly.
    instance) {
        if (!component)
            return;
        if (isString(component)) {
            return resolveAsset(COMPONENTS, component, instance);
        }
        else if (isFunction(component) || isObject(component)) {
            return component;
        }
    }
    function resolveDirective(name) {
        return resolveAsset(DIRECTIVES, name);
    }
    function resolveAsset(type, name, instance = currentRenderingInstance ||
        currentInstance) {
        if (instance) {
            let camelized, capitalized;
            const registry = instance[type];
            let res = registry[name] ||
                registry[(camelized = camelize(name))] ||
                registry[(capitalized = capitalize(camelized))];
            if (!res && type === COMPONENTS) {
                const self = instance.type;
                const selfName = self.displayName || self.name;
                if (selfName &&
                    (selfName === name ||
                        selfName === camelized ||
                        selfName === capitalized)) {
                    res = self;
                }
            }
            if ( !res) {
                warn(`Failed to resolve ${type.slice(0, -1)}: ${name}`);
            }
            return res;
        }
        else {
            warn(`resolve${capitalize(type.slice(0, -1))} ` +
                `can only be used in render() or setup().`);
        }
    }
  
    function renderList(source, renderItem) {
        let ret;
        if (isArray(source) || isString(source)) {
            ret = new Array(source.length);
            for (let i = 0, l = source.length; i < l; i++) {
                ret[i] = renderItem(source[i], i);
            }
        }
        else if (typeof source === 'number') {
            ret = new Array(source);
            for (let i = 0; i < source; i++) {
                ret[i] = renderItem(i + 1, i);
            }
        }
        else if (isObject(source)) {
            if (source[Symbol.iterator]) {
                ret = Array.from(source, renderItem);
            }
            else {
                const keys = Object.keys(source);
                ret = new Array(keys.length);
                for (let i = 0, l = keys.length; i < l; i++) {
                    const key = keys[i];
                    ret[i] = renderItem(source[key], key, i);
                }
            }
        }
        else {
            ret = [];
        }
        return ret;
    }
  
    // for converting {{ interpolation }} values to displayed strings.
    function toString(val) {
        return val == null
            ? ''
            : isArray(val) || (isPlainObject(val) && val.toString === objectToString)
                ? JSON.stringify(val, null, 2)
                : String(val);
    }
  
    // For prefixing keys in v-on="obj" with "on"
    function toHandlers(obj) {
        const ret = {};
        if ( !isObject(obj)) {
            warn(`v-on with no argument expects an object value.`);
            return ret;
        }
        for (const key in obj) {
            ret[`on${key}`] = obj[key];
        }
        return ret;
    }
  
    function renderSlot(slots, name, props = {}, 
    // this is not a user-facing function, so the fallback is always generated by
    // the compiler and guaranteed to be an array
    fallback) {
        const slot = slots[name];
        return (openBlock(),
            createBlock(Fragment, { key: props.key }, slot ? slot(props) : fallback || [], slots._compiled ? 0 : -1 /* BAIL */));
    }
  
    function createSlots(slots, dynamicSlots) {
        for (let i = 0; i < dynamicSlots.length; i++) {
            const slot = dynamicSlots[i];
            // array of dynamic slot generated by <template v-for="..." #[...]>
            if (isArray(slot)) {
                for (let j = 0; j < slot.length; j++) {
                    slots[slot[j].name] = slot[j].fn;
                }
            }
            else {
                // conditional single slot generated by <template v-if="..." #foo>
                slots[slot.name] = slot.fn;
            }
        }
        return slots;
    }
  
    // Public API ------------------------------------------------------------------
    const version = "3.0.0";
    const PatchFlags = PublicPatchFlags;
    const capitalize$1 = capitalize;
    const camelize$1 = camelize;
  
    const doc = document;
    const svgNS = 'http://www.w3.org/2000/svg';
    const nodeOps = {
        insert: (child, parent, anchor) => {
            if (anchor != null) {
                parent.insertBefore(child, anchor);
            }
            else {
                parent.appendChild(child);
            }
        },
        remove: (child) => {
            const parent = child.parentNode;
            if (parent != null) {
                parent.removeChild(child);
            }
        },
        createElement: (tag, isSVG) => isSVG ? doc.createElementNS(svgNS, tag) : doc.createElement(tag),
        createText: (text) => doc.createTextNode(text),
        createComment: (text) => doc.createComment(text),
        setText: (node, text) => {
            node.nodeValue = text;
        },
        setElementText: (el, text) => {
            el.textContent = text;
        },
        parentNode: (node) => node.parentNode,
        nextSibling: (node) => node.nextSibling,
        querySelector: (selector) => doc.querySelector(selector),
        setScopeId(el, id) {
            el.setAttribute(id, '');
        }
    };
  
    // compiler should normalize class + :class bindings on the same element
    // into a single binding ['staticClass', dynamic]
    function patchClass(el, value, isSVG) {
        if (value == null) {
            value = '';
        }
        // directly setting className should be faster than setAttribute in theory
        if (isSVG) {
            el.setAttribute('class', value);
        }
        else {
            // if this is an element during a transition, take the temporary transition
            // classes into account.
            const transitionClasses = el._vtc;
            if (transitionClasses) {
                value = [value, ...transitionClasses].join(' ');
            }
            el.className = value;
        }
    }
  
    function patchStyle(el, prev, next) {
        const style = el.style;
        if (!next) {
            el.removeAttribute('style');
        }
        else if (isString(next)) {
            style.cssText = next;
        }
        else {
            for (const key in next) {
                setStyle(style, key, next[key]);
            }
            if (prev && !isString(prev)) {
                for (const key in prev) {
                    if (!next[key]) {
                        setStyle(style, key, '');
                    }
                }
            }
        }
    }
    const importantRE = /\s*!important$/;
    function setStyle(style, name, val) {
        if (name.startsWith('--')) {
            // custom property definition
            style.setProperty(name, val);
        }
        else {
            const prefixed = autoPrefix(style, name);
            if (importantRE.test(val)) {
                // !important
                style.setProperty(hyphenate(prefixed), val.replace(importantRE, ''), 'important');
            }
            else {
                style[prefixed] = val;
            }
        }
    }
    const prefixes = ['Webkit', 'Moz', 'ms'];
    const prefixCache = {};
    function autoPrefix(style, rawName) {
        const cached = prefixCache[rawName];
        if (cached) {
            return cached;
        }
        let name = camelize$1(rawName);
        if (name !== 'filter' && name in style) {
            return (prefixCache[rawName] = name);
        }
        name = capitalize(name);
        for (let i = 0; i < prefixes.length; i++) {
            const prefixed = prefixes[i] + name;
            if (prefixed in style) {
                return (prefixCache[rawName] = prefixed);
            }
        }
        return rawName;
    }
  
    function patchAttr(el, key, value) {
        if (value == null) {
            el.removeAttribute(key);
        }
        else {
            el.setAttribute(key, value);
        }
    }
  
    function patchDOMProp(el, key, value, 
    // the following args are passed only due to potential innerHTML/textContent
    // overriding existing VNodes, in which case the old tree must be properly
    // unmounted.
    prevChildren, parentComponent, parentSuspense, unmountChildren) {
        if ((key === 'innerHTML' || key === 'textContent') && prevChildren != null) {
            unmountChildren(prevChildren, parentComponent, parentSuspense);
            el[key] = value == null ? '' : value;
            return;
        }
        if (key === 'value' && el.tagName !== 'PROGRESS') {
            // store value as _value as well since
            // non-string values will be stringified.
            el._value = value;
            el.value = value == null ? '' : value;
            return;
        }
        if (value === '' && typeof el[key] === 'boolean') {
            // e.g. <select multiple> compiles to { multiple: '' }
            el[key] = true;
        }
        else {
            el[key] = value == null ? '' : value;
        }
    }
  
    // Async edge case fix requires storing an event listener's attach timestamp.
    let _getNow = Date.now;
    // Determine what event timestamp the browser is using. Annoyingly, the
    // timestamp can either be hi-res ( relative to page load) or low-res
    // (relative to UNIX epoch), so in order to compare time we have to use the
    // same timestamp type when saving the flush timestamp.
    if (typeof document !== 'undefined' &&
        _getNow() > document.createEvent('Event').timeStamp) {
        // if the low-res timestamp which is bigger than the event timestamp
        // (which is evaluated AFTER) it means the event is using a hi-res timestamp,
        // and we need to use the hi-res version for event listeners as well.
        _getNow = () => performance.now();
    }
    // To avoid the overhead of repeatedly calling performance.now(), we cache
    // and use the same timestamp for all event listeners attached in the same tick.
    let cachedNow = 0;
    const p$1 = Promise.resolve();
    const reset = () => {
        cachedNow = 0;
    };
    const getNow = () => cachedNow || (p$1.then(reset), (cachedNow = _getNow()));
    function addEventListener(el, event, handler, options) {
        el.addEventListener(event, handler, options);
    }
    function removeEventListener(el, event, handler, options) {
        el.removeEventListener(event, handler, options);
    }
    function patchEvent(el, name, prevValue, nextValue, instance = null) {
        const prevOptions = prevValue && 'options' in prevValue && prevValue.options;
        const nextOptions = nextValue && 'options' in nextValue && nextValue.options;
        const invoker = prevValue && prevValue.invoker;
        const value = nextValue && 'handler' in nextValue ? nextValue.handler : nextValue;
        if (prevOptions || nextOptions) {
            const prev = prevOptions || EMPTY_OBJ;
            const next = nextOptions || EMPTY_OBJ;
            if (prev.capture !== next.capture ||
                prev.passive !== next.passive ||
                prev.once !== next.once) {
                if (invoker) {
                    removeEventListener(el, name, invoker, prev);
                }
                if (nextValue && value) {
                    const invoker = createInvoker(value, instance);
                    nextValue.invoker = invoker;
                    addEventListener(el, name, invoker, next);
                }
                return;
            }
        }
        if (nextValue && value) {
            if (invoker) {
                prevValue.invoker = null;
                invoker.value = value;
                nextValue.invoker = invoker;
                invoker.lastUpdated = getNow();
            }
            else {
                addEventListener(el, name, createInvoker(value, instance), nextOptions || void 0);
            }
        }
        else if (invoker) {
            removeEventListener(el, name, invoker, prevOptions || void 0);
        }
    }
    function createInvoker(initialValue, instance) {
        const invoker = (e) => {
            // async edge case #6566: inner click event triggers patch, event handler
            // attached to outer element during patch, and triggered again. This
            // happens because browsers fire microtask ticks between event propagation.
            // the solution is simple: we save the timestamp when a handler is attached,
            // and the handler would only fire if the event passed to it was fired
            // AFTER it was attached.
            if (e.timeStamp >= invoker.lastUpdated - 1) {
                callWithAsyncErrorHandling(invoker.value, instance, 5 /* NATIVE_EVENT_HANDLER */, [e]);
            }
        };
        invoker.value = initialValue;
        initialValue.invoker = invoker;
        invoker.lastUpdated = getNow();
        return invoker;
    }
  
    function patchProp(el, key, nextValue, prevValue, isSVG, prevChildren, parentComponent, parentSuspense, unmountChildren) {
        switch (key) {
            // special
            case 'class':
                patchClass(el, nextValue, isSVG);
                break;
            case 'style':
                patchStyle(el, prevValue, nextValue);
                break;
            case 'modelValue':
            case 'onUpdate:modelValue':
                // Do nothing. This is handled by v-model directives.
                break;
            default:
                if (isOn(key)) {
                    patchEvent(el, key.slice(2).toLowerCase(), prevValue, nextValue, parentComponent);
                }
                else if (!isSVG && key in el) {
                    patchDOMProp(el, key, nextValue, prevChildren, parentComponent, parentSuspense, unmountChildren);
                }
                else {
                    // special case for <input v-model type="checkbox"> with
                    // :true-value & :false-value
                    // store value as dom properties since non-string values will be
                    // stringified.
                    if (key === 'true-value') {
                        el._trueValue = nextValue;
                    }
                    else if (key === 'false-value') {
                        el._falseValue = nextValue;
                    }
                    patchAttr(el, key, nextValue);
                }
                break;
        }
    }
  
    const getModelAssigner = (vnode) => vnode.props['onUpdate:modelValue'];
    function onCompositionStart(e) {
        e.target.composing = true;
    }
    function onCompositionEnd(e) {
        const target = e.target;
        if (target.composing) {
            target.composing = false;
            trigger$1(target, 'input');
        }
    }
    function trigger$1(el, type) {
        const e = document.createEvent('HTMLEvents');
        e.initEvent(type, true, true);
        el.dispatchEvent(e);
    }
    function toNumber(val) {
        const n = parseFloat(val);
        return isNaN(n) ? val : n;
    }
    // We are exporting the v-model runtime directly as vnode hooks so that it can
    // be tree-shaken in case v-model is never used.
    const vModelText = {
        beforeMount(el, { value, modifiers: { lazy, trim, number } }, vnode) {
            el.value = value;
            const assign = getModelAssigner(vnode);
            const castToNumber = number || el.type === 'number';
            addEventListener(el, lazy ? 'change' : 'input', () => {
                let domValue = el.value;
                if (trim) {
                    domValue = domValue.trim();
                }
                else if (castToNumber) {
                    domValue = toNumber(domValue);
                }
                assign(domValue);
            });
            if (trim) {
                addEventListener(el, 'change', () => {
                    el.value = el.value.trim();
                });
            }
            if (!lazy) {
                addEventListener(el, 'compositionstart', onCompositionStart);
                addEventListener(el, 'compositionend', onCompositionEnd);
                // Safari < 10.2 & UIWebView doesn't fire compositionend when
                // switching focus before confirming composition choice
                // this also fixes the issue where some browsers e.g. iOS Chrome
                // fires "change" instead of "input" on autocomplete.
                addEventListener(el, 'change', onCompositionEnd);
            }
        },
        beforeUpdate(el, { value, oldValue, modifiers: { trim, number } }) {
            if (value === oldValue) {
                return;
            }
            if (document.activeElement === el) {
                if (trim && el.value.trim() === value) {
                    return;
                }
                if ((number || el.type === 'number') && toNumber(el.value) === value) {
                    return;
                }
            }
            el.value = value;
        }
    };
    const vModelCheckbox = {
        beforeMount(el, binding, vnode) {
            setChecked(el, binding, vnode);
            const assign = getModelAssigner(vnode);
            addEventListener(el, 'change', () => {
                const modelValue = el._modelValue;
                const elementValue = getValue(el);
                const checked = el.checked;
                if (isArray(modelValue)) {
                    const index = looseIndexOf(modelValue, elementValue);
                    const found = index !== -1;
                    if (checked && !found) {
                        assign(modelValue.concat(elementValue));
                    }
                    else if (!checked && found) {
                        const filtered = [...modelValue];
                        filtered.splice(index, 1);
                        assign(filtered);
                    }
                }
                else {
                    assign(getCheckboxValue(el, checked));
                }
            });
        },
        beforeUpdate: setChecked
    };
    function setChecked(el, { value, oldValue }, vnode) {
        el._modelValue = value;
        if (isArray(value)) {
            el.checked = looseIndexOf(value, vnode.props.value) > -1;
        }
        else if (value !== oldValue) {
            el.checked = looseEqual(value, getCheckboxValue(el, true));
        }
    }
    const vModelRadio = {
        beforeMount(el, { value }, vnode) {
            el.checked = looseEqual(value, vnode.props.value);
            const assign = getModelAssigner(vnode);
            addEventListener(el, 'change', () => {
                assign(getValue(el));
            });
        },
        beforeUpdate(el, { value, oldValue }, vnode) {
            if (value !== oldValue) {
                el.checked = looseEqual(value, vnode.props.value);
            }
        }
    };
    const vModelSelect = {
        // use mounted & updated because <select> relies on its children <option>s.
        mounted(el, { value }, vnode) {
            setSelected(el, value);
            const assign = getModelAssigner(vnode);
            addEventListener(el, 'change', () => {
                const selectedVal = Array.prototype.filter
                    .call(el.options, (o) => o.selected)
                    .map(getValue);
                assign(el.multiple ? selectedVal : selectedVal[0]);
            });
        },
        updated(el, { value }) {
            setSelected(el, value);
        }
    };
    function setSelected(el, value) {
        const isMultiple = el.multiple;
        if (isMultiple && !isArray(value)) {
            
                warn(`<select multiple v-model> expects an Array value for its binding, ` +
                    `but got ${Object.prototype.toString.call(value).slice(8, -1)}.`);
            return;
        }
        for (let i = 0, l = el.options.length; i < l; i++) {
            const option = el.options[i];
            const optionValue = getValue(option);
            if (isMultiple) {
                option.selected = looseIndexOf(value, optionValue) > -1;
            }
            else {
                if (looseEqual(getValue(option), value)) {
                    el.selectedIndex = i;
                    return;
                }
            }
        }
        if (!isMultiple) {
            el.selectedIndex = -1;
        }
    }
    function looseEqual(a, b) {
        if (a === b)
            return true;
        const isObjectA = isObject(a);
        const isObjectB = isObject(b);
        if (isObjectA && isObjectB) {
            try {
                const isArrayA = isArray(a);
                const isArrayB = isArray(b);
                if (isArrayA && isArrayB) {
                    return (a.length === b.length &&
                        a.every((e, i) => looseEqual(e, b[i])));
                }
                else if (a instanceof Date && b instanceof Date) {
                    return a.getTime() === b.getTime();
                }
                else if (!isArrayA && !isArrayB) {
                    const keysA = Object.keys(a);
                    const keysB = Object.keys(b);
                    return (keysA.length === keysB.length &&
                        keysA.every(key => looseEqual(a[key], b[key])));
                }
                else {
                    /* istanbul ignore next */
                    return false;
                }
            }
            catch (e) {
                /* istanbul ignore next */
                return false;
            }
        }
        else if (!isObjectA && !isObjectB) {
            return String(a) === String(b);
        }
        else {
            return false;
        }
    }
    function looseIndexOf(arr, val) {
        return arr.findIndex(item => looseEqual(item, val));
    }
    // retrieve raw value set via :value bindings
    function getValue(el) {
        return '_value' in el ? el._value : el.value;
    }
    // retrieve raw value for true-value and false-value set via :true-value or :false-value bindings
    function getCheckboxValue(el, checked) {
        const key = checked ? '_trueValue' : '_falseValue';
        return key in el ? el[key] : checked;
    }
    const vModelDynamic = {
        beforeMount(el, binding, vnode) {
            callModelHook(el, binding, vnode, null, 'beforeMount');
        },
        mounted(el, binding, vnode) {
            callModelHook(el, binding, vnode, null, 'mounted');
        },
        beforeUpdate(el, binding, vnode, prevVNode) {
            callModelHook(el, binding, vnode, prevVNode, 'beforeUpdate');
        },
        updated(el, binding, vnode, prevVNode) {
            callModelHook(el, binding, vnode, prevVNode, 'updated');
        }
    };
    function callModelHook(el, binding, vnode, prevVNode, hook) {
        let modelToUse;
        switch (el.tagName) {
            case 'SELECT':
                modelToUse = vModelSelect;
                break;
            case 'TEXTAREA':
                modelToUse = vModelText;
                break;
            default:
                switch (el.type) {
                    case 'checkbox':
                        modelToUse = vModelCheckbox;
                        break;
                    case 'radio':
                        modelToUse = vModelRadio;
                        break;
                    default:
                        modelToUse = vModelText;
                }
        }
        const fn = modelToUse[hook];
        fn && fn(el, binding, vnode, prevVNode);
    }
  
    const systemModifiers = ['ctrl', 'shift', 'alt', 'meta'];
    const modifierGuards = {
        stop: e => e.stopPropagation(),
        prevent: e => e.preventDefault(),
        self: e => e.target !== e.currentTarget,
        ctrl: e => !e.ctrlKey,
        shift: e => !e.shiftKey,
        alt: e => !e.altKey,
        meta: e => !e.metaKey,
        left: e => 'button' in e && e.button !== 0,
        middle: e => 'button' in e && e.button !== 1,
        right: e => 'button' in e && e.button !== 2,
        exact: (e, modifiers) => systemModifiers.some(m => e[`${m}Key`] && !modifiers.includes(m))
    };
    const withModifiers = (fn, modifiers) => {
        return (event) => {
            for (let i = 0; i < modifiers.length; i++) {
                const guard = modifierGuards[modifiers[i]];
                if (guard && guard(event, modifiers))
                    return;
            }
            return fn(event);
        };
    };
    // Kept for 2.x compat.
    // Note: IE11 compat for `spacebar` and `del` is removed for now.
    const keyNames = {
        esc: 'escape',
        space: ' ',
        up: 'arrow-up',
        left: 'arrow-left',
        right: 'arrow-right',
        down: 'arrow-down',
        delete: 'backspace'
    };
    const withKeys = (fn, modifiers) => {
        return (event) => {
            if (!('key' in event))
                return;
            const eventKey = hyphenate(event.key);
            if (
            // None of the provided key modifiers match the current event key
            !modifiers.some(k => k === eventKey || keyNames[k] === eventKey)) {
                return;
            }
            return fn(event);
        };
    };
  
    const vShow = {
        beforeMount(el, { value }, { transition }) {
            el._vod = el.style.display === 'none' ? '' : el.style.display;
            if (transition && value) {
                transition.beforeEnter(el);
            }
            else {
                setDisplay(el, value);
            }
        },
        mounted(el, { value }, { transition }) {
            if (transition && value) {
                transition.enter(el);
            }
        },
        updated(el, { value, oldValue }, { transition }) {
            if (!value === !oldValue)
                return;
            if (transition) {
                if (value) {
                    transition.beforeEnter(el);
                    setDisplay(el, true);
                    transition.enter(el);
                }
                else {
                    transition.leave(el, () => {
                        setDisplay(el, false);
                    });
                }
            }
            else {
                setDisplay(el, value);
            }
        },
        beforeUnmount(el) {
            setDisplay(el, true);
        }
    };
    function setDisplay(el, value) {
        el.style.display = value ? el._vod : 'none';
    }
  
    const TRANSITION$1 = 'transition';
    const ANIMATION = 'animation';
    // DOM Transition is a higher-order-component based on the platform-agnostic
    // base Transition component, with DOM-specific logic.
    const Transition = (props, { slots }) => h(BaseTransition, resolveTransitionProps(props), slots);
    const TransitionPropsValidators = {
        ...BaseTransition.props,
        name: String,
        type: String,
        css: {
            type: Boolean,
            default: true
        },
        duration: Object,
        enterFromClass: String,
        enterActiveClass: String,
        enterToClass: String,
        appearFromClass: String,
        appearActiveClass: String,
        appearToClass: String,
        leaveFromClass: String,
        leaveActiveClass: String,
        leaveToClass: String
    };
    {
        Transition.props = TransitionPropsValidators;
    }
    function resolveTransitionProps({ name = 'v', type, css = true, duration, enterFromClass = `${name}-enter-from`, enterActiveClass = `${name}-enter-active`, enterToClass = `${name}-enter-to`, appearFromClass = enterFromClass, appearActiveClass = enterActiveClass, appearToClass = enterToClass, leaveFromClass = `${name}-leave-from`, leaveActiveClass = `${name}-leave-active`, leaveToClass = `${name}-leave-to`, ...baseProps }) {
        if (!css) {
            return baseProps;
        }
        const instance = getCurrentInstance();
        const durations = normalizeDuration(duration);
        const enterDuration = durations && durations[0];
        const leaveDuration = durations && durations[1];
        const { appear, onBeforeEnter, onEnter, onLeave } = baseProps;
        // is appearing
        if (appear && !getCurrentInstance().isMounted) {
            enterFromClass = appearFromClass;
            enterActiveClass = appearActiveClass;
            enterToClass = appearToClass;
        }
        const finishEnter = (el, done) => {
            removeTransitionClass(el, enterToClass);
            removeTransitionClass(el, enterActiveClass);
            done && done();
        };
        const finishLeave = (el, done) => {
            removeTransitionClass(el, leaveToClass);
            removeTransitionClass(el, leaveActiveClass);
            done && done();
        };
        // only needed for user hooks called in nextFrame
        // sync errors are already handled by BaseTransition
        function callHookWithErrorHandling(hook, args) {
            callWithAsyncErrorHandling(hook, instance, 8 /* TRANSITION_HOOK */, args);
        }
        return {
            ...baseProps,
            onBeforeEnter(el) {
                onBeforeEnter && onBeforeEnter(el);
                addTransitionClass(el, enterActiveClass);
                addTransitionClass(el, enterFromClass);
            },
            onEnter(el, done) {
                nextFrame(() => {
                    const resolve = () => finishEnter(el, done);
                    onEnter && callHookWithErrorHandling(onEnter, [el, resolve]);
                    removeTransitionClass(el, enterFromClass);
                    addTransitionClass(el, enterToClass);
                    if (!(onEnter && onEnter.length > 1)) {
                        if (enterDuration) {
                            setTimeout(resolve, enterDuration);
                        }
                        else {
                            whenTransitionEnds(el, type, resolve);
                        }
                    }
                });
            },
            onLeave(el, done) {
                addTransitionClass(el, leaveActiveClass);
                addTransitionClass(el, leaveFromClass);
                nextFrame(() => {
                    const resolve = () => finishLeave(el, done);
                    onLeave && callHookWithErrorHandling(onLeave, [el, resolve]);
                    removeTransitionClass(el, leaveFromClass);
                    addTransitionClass(el, leaveToClass);
                    if (!(onLeave && onLeave.length > 1)) {
                        if (leaveDuration) {
                            setTimeout(resolve, leaveDuration);
                        }
                        else {
                            whenTransitionEnds(el, type, resolve);
                        }
                    }
                });
            },
            onEnterCancelled: finishEnter,
            onLeaveCancelled: finishLeave
        };
    }
    function normalizeDuration(duration) {
        if (duration == null) {
            return null;
        }
        else if (isObject(duration)) {
            return [toNumber$1(duration.enter), toNumber$1(duration.leave)];
        }
        else {
            const n = toNumber$1(duration);
            return [n, n];
        }
    }
    function toNumber$1(val) {
        const res = Number(val || 0);
        validateDuration(res);
        return res;
    }
    function validateDuration(val) {
        if (typeof val !== 'number') {
            warn(`<transition> explicit duration is not a valid number - ` +
                `got ${JSON.stringify(val)}.`);
        }
        else if (isNaN(val)) {
            warn(`<transition> explicit duration is NaN - ` +
                'the duration expression might be incorrect.');
        }
    }
    function addTransitionClass(el, cls) {
        el.classList.add(cls);
        (el._vtc || (el._vtc = new Set())).add(cls);
    }
    function removeTransitionClass(el, cls) {
        el.classList.remove(cls);
        if (el._vtc) {
            el._vtc.delete(cls);
            if (!el._vtc.size) {
                el._vtc = undefined;
            }
        }
    }
    function nextFrame(cb) {
        requestAnimationFrame(() => {
            requestAnimationFrame(cb);
        });
    }
    function whenTransitionEnds(el, expectedType, cb) {
        const { type, timeout, propCount } = getTransitionInfo(el, expectedType);
        if (!type) {
            return cb();
        }
        const endEvent = type + 'end';
        let ended = 0;
        const end = () => {
            el.removeEventListener(endEvent, onEnd);
            cb();
        };
        const onEnd = (e) => {
            if (e.target === el) {
                if (++ended >= propCount) {
                    end();
                }
            }
        };
        setTimeout(() => {
            if (ended < propCount) {
                end();
            }
        }, timeout + 1);
        el.addEventListener(endEvent, onEnd);
    }
    function getTransitionInfo(el, expectedType) {
        const styles = window.getComputedStyle(el);
        // JSDOM may return undefined for transition properties
        const getStyleProperties = (key) => (styles[key] || '').split(', ');
        const transitionDelays = getStyleProperties(TRANSITION$1 + 'Delay');
        const transitionDurations = getStyleProperties(TRANSITION$1 + 'Duration');
        const transitionTimeout = getTimeout(transitionDelays, transitionDurations);
        const animationDelays = getStyleProperties(ANIMATION + 'Delay');
        const animationDurations = getStyleProperties(ANIMATION + 'Duration');
        const animationTimeout = getTimeout(animationDelays, animationDurations);
        let type = null;
        let timeout = 0;
        let propCount = 0;
        /* istanbul ignore if */
        if (expectedType === TRANSITION$1) {
            if (transitionTimeout > 0) {
                type = TRANSITION$1;
                timeout = transitionTimeout;
                propCount = transitionDurations.length;
            }
        }
        else if (expectedType === ANIMATION) {
            if (animationTimeout > 0) {
                type = ANIMATION;
                timeout = animationTimeout;
                propCount = animationDurations.length;
            }
        }
        else {
            timeout = Math.max(transitionTimeout, animationTimeout);
            type =
                timeout > 0
                    ? transitionTimeout > animationTimeout
                        ? TRANSITION$1
                        : ANIMATION
                    : null;
            propCount = type
                ? type === TRANSITION$1
                    ? transitionDurations.length
                    : animationDurations.length
                : 0;
        }
        const hasTransform = type === TRANSITION$1 &&
            /\b(transform|all)(,|$)/.test(styles[TRANSITION$1 + 'Property']);
        return {
            type,
            timeout,
            propCount,
            hasTransform
        };
    }
    function getTimeout(delays, durations) {
        while (delays.length < durations.length) {
            delays = delays.concat(delays);
        }
        return Math.max(...durations.map((d, i) => toMs(d) + toMs(delays[i])));
    }
    // Old versions of Chromium (below 61.0.3163.100) formats floating pointer
    // numbers in a locale-dependent way, using a comma instead of a dot.
    // If comma is not replaced with a dot, the input will be rounded down
    // (i.e. acting as a floor function) causing unexpected behaviors
    function toMs(s) {
        return Number(s.slice(0, -1).replace(',', '.')) * 1000;
    }
  
    const positionMap = new WeakMap();
    const newPositionMap = new WeakMap();
    const TransitionGroupImpl = {
        setup(props, { slots }) {
            const instance = getCurrentInstance();
            const state = useTransitionState();
            let prevChildren;
            let children;
            let hasMove = null;
            onUpdated(() => {
                // children is guaranteed to exist after initial render
                if (!prevChildren.length) {
                    return;
                }
                const moveClass = props.moveClass || `${props.name || 'v'}-move`;
                // Check if move transition is needed. This check is cached per-instance.
                hasMove =
                    hasMove === null
                        ? (hasMove = hasCSSTransform(prevChildren[0].el, instance.vnode.el, moveClass))
                        : hasMove;
                if (!hasMove) {
                    return;
                }
                // we divide the work into three loops to avoid mixing DOM reads and writes
                // in each iteration - which helps prevent layout thrashing.
                prevChildren.forEach(callPendingCbs);
                prevChildren.forEach(recordPosition);
                const movedChildren = prevChildren.filter(applyTranslation);
                // force reflow to put everything in position
                forceReflow();
                movedChildren.forEach(c => {
                    const el = c.el;
                    const style = el.style;
                    addTransitionClass(el, moveClass);
                    style.transform = style.WebkitTransform = style.transitionDuration = '';
                    const cb = (el._moveCb = (e) => {
                        if (e && e.target !== el) {
                            return;
                        }
                        if (!e || /transform$/.test(e.propertyName)) {
                            el.removeEventListener('transitionend', cb);
                            el._moveCb = null;
                            removeTransitionClass(el, moveClass);
                        }
                    });
                    el.addEventListener('transitionend', cb);
                });
            });
            return () => {
                const rawProps = toRaw(props);
                const cssTransitionProps = resolveTransitionProps(rawProps);
                const tag = rawProps.tag || Fragment;
                prevChildren = children;
                children = slots.default ? slots.default() : [];
                // handle fragment children case, e.g. v-for
                if (children.length === 1 && children[0].type === Fragment) {
                    children = children[0].children;
                }
                for (let i = 0; i < children.length; i++) {
                    const child = children[i];
                    if (child.key != null) {
                        setTransitionHooks(child, resolveTransitionHooks(child, cssTransitionProps, state, instance));
                    }
                    else {
                        warn(`<TransitionGroup> children must be keyed.`);
                    }
                }
                if (prevChildren) {
                    for (let i = 0; i < prevChildren.length; i++) {
                        const child = prevChildren[i];
                        setTransitionHooks(child, resolveTransitionHooks(child, cssTransitionProps, state, instance));
                        positionMap.set(child, child.el.getBoundingClientRect());
                    }
                }
                return createVNode(tag, null, children);
            };
        }
    };
    const TransitionGroup = TransitionGroupImpl;
    {
        const props = (TransitionGroup.props = {
            ...TransitionPropsValidators,
            tag: String,
            moveClass: String
        });
        delete props.mode;
    }
    function callPendingCbs(c) {
        if (c.el._moveCb) {
            c.el._moveCb();
        }
        if (c.el._enterCb) {
            c.el._enterCb();
        }
    }
    function recordPosition(c) {
        newPositionMap.set(c, c.el.getBoundingClientRect());
    }
    function applyTranslation(c) {
        const oldPos = positionMap.get(c);
        const newPos = newPositionMap.get(c);
        const dx = oldPos.left - newPos.left;
        const dy = oldPos.top - newPos.top;
        if (dx || dy) {
            const s = c.el.style;
            s.transform = s.WebkitTransform = `translate(${dx}px,${dy}px)`;
            s.transitionDuration = '0s';
            return c;
        }
    }
    // this is put in a dedicated function to avoid the line from being treeshaken
    function forceReflow() {
        return document.body.offsetHeight;
    }
    function hasCSSTransform(el, root, moveClass) {
        // Detect whether an element with the move class applied has
        // CSS transitions. Since the element may be inside an entering
        // transition at this very moment, we make a clone of it and remove
        // all other transition classes applied to ensure only the move class
        // is applied.
        const clone = el.cloneNode();
        if (el._vtc) {
            el._vtc.forEach(cls => clone.classList.remove(cls));
        }
        clone.classList.add(moveClass);
        clone.style.display = 'none';
        const container = (root.nodeType === 1
            ? root
            : root.parentNode);
        container.appendChild(clone);
        const { hasTransform } = getTransitionInfo(clone);
        container.removeChild(clone);
        return hasTransform;
    }
  
    const { render: baseRender, createApp: baseCreateApp } = createRenderer({
        patchProp,
        ...nodeOps
    });
    // use explicit type casts here to avoid import() calls in rolled-up d.ts
    const render = baseRender;
    const createApp = () => {
        const app = baseCreateApp();
        {
            // Inject `isNativeTag`
            // this is used for component name validation (dev only)
            Object.defineProperty(app.config, 'isNativeTag', {
                value: (tag) => isHTMLTag(tag) || isSVGTag(tag),
                writable: false
            });
        }
        const mount = app.mount;
        app.mount = (component, container, props) => {
            if (isString(container)) {
                container = document.querySelector(container);
                if (!container) {
                    
                        warn(`Failed to mount app: mount target selector returned null.`);
                    return;
                }
            }
            if (
                !isFunction(component) &&
                !component.render &&
                !component.template) {
                component.template = container.innerHTML;
            }
            // clear content before mounting
            container.innerHTML = '';
            return mount(component, container, props);
        };
        return app;
    };
  
    var runtimeDom = /*#__PURE__*/Object.freeze({
      __proto__: null,
      render: render,
      createApp: createApp,
      vModelText: vModelText,
      vModelCheckbox: vModelCheckbox,
      vModelRadio: vModelRadio,
      vModelSelect: vModelSelect,
      vModelDynamic: vModelDynamic,
      withModifiers: withModifiers,
      withKeys: withKeys,
      vShow: vShow,
      Transition: Transition,
      TransitionGroup: TransitionGroup,
      version: version,
      PatchFlags: PatchFlags,
      capitalize: capitalize$1,
      camelize: camelize$1,
      nextTick: nextTick,
      defineComponent: defineComponent,
      getCurrentInstance: getCurrentInstance,
      h: h,
      createVNode: createVNode,
      cloneVNode: cloneVNode,
      mergeProps: mergeProps,
      openBlock: openBlock,
      createBlock: createBlock,
      Text: Text,
      Comment: Comment,
      Fragment: Fragment,
      Portal: Portal,
      Suspense: Suspense,
      KeepAlive: KeepAlive,
      BaseTransition: BaseTransition,
      ShapeFlags: PublicShapeFlags,
      useCSSModule: useCSSModule,
      createRenderer: createRenderer,
      warn: warn,
      handleError: handleError,
      callWithErrorHandling: callWithErrorHandling,
      callWithAsyncErrorHandling: callWithAsyncErrorHandling,
      useTransitionState: useTransitionState,
      resolveTransitionHooks: resolveTransitionHooks,
      setTransitionHooks: setTransitionHooks,
      withDirectives: withDirectives,
      resolveComponent: resolveComponent,
      resolveDirective: resolveDirective,
      resolveDynamicComponent: resolveDynamicComponent,
      renderList: renderList,
      toString: toString,
      toHandlers: toHandlers,
      renderSlot: renderSlot,
      createSlots: createSlots,
      pushScopeId: pushScopeId,
      popScopeId: popScopeId,
      withScopeId: withScopeId,
      setBlockTracking: setBlockTracking,
      createTextVNode: createTextVNode,
      createCommentVNode: createCommentVNode,
      registerRuntimeCompiler: registerRuntimeCompiler,
      recordEffect: recordEffect,
      computed: computed$1,
      ref: ref,
      isRef: isRef,
      toRefs: toRefs,
      reactive: reactive,
      isReactive: isReactive,
      readonly: readonly,
      isReadonly: isReadonly,
      toRaw: toRaw,
      markReadonly: markReadonly,
      markNonReactive: markNonReactive,
      effect: effect,
      watch: watch,
      instanceWatch: instanceWatch,
      injectHook: injectHook,
      createHook: createHook,
      onBeforeMount: onBeforeMount,
      onMounted: onMounted,
      onBeforeUpdate: onBeforeUpdate,
      onUpdated: onUpdated,
      onBeforeUnmount: onBeforeUnmount,
      onUnmounted: onUnmounted,
      onRenderTriggered: onRenderTriggered,
      onRenderTracked: onRenderTracked,
      onErrorCaptured: onErrorCaptured,
      onActivated: onActivated,
      onDeactivated: onDeactivated,
      provide: provide,
      inject: inject
    });
  
    {
        console[console.info ? 'info' : 'log'](`You are running a development build of Vue.\n` +
            `Make sure to use the production build (*.prod.js) when deploying for production.`);
    }
  
    // This entry is the "full-build" that includes both the runtime
    const compileCache = Object.create(null);
    function compileToFunction(template, options) {
        if (!isString(template)) {
            if (template.nodeType) {
                template = template.innerHTML;
            }
            else {
                 warn(`invalid template option: `, template);
                return NOOP;
            }
        }
        const key = template;
        const cached = compileCache[key];
        if (cached) {
            return cached;
        }
        if (template[0] === '#') {
            const el = document.querySelector(template);
            if ( !el) {
                warn(`Template element not found or is empty: ${template}`);
            }
            template = el ? el.innerHTML : ``;
        }
        const { code } = compile(template, {
            hoistStatic: true,
            onError(err) {
                {
                    const message = `Template compilation error: ${err.message}`;
                    const codeFrame = err.loc &&
                        generateCodeFrame(template, err.loc.start.offset, err.loc.end.offset);
                    warn(codeFrame ? `${message}\n${codeFrame}` : message);
                }
            },
            ...options
        });
        const render = new Function('Vue', code)(runtimeDom);
        return (compileCache[key] = render);
    }
    registerRuntimeCompiler(compileToFunction);
  
    exports.BaseTransition = BaseTransition;
    exports.Comment = Comment;
    exports.Fragment = Fragment;
    exports.KeepAlive = KeepAlive;
    exports.PatchFlags = PatchFlags;
    exports.Portal = Portal;
    exports.ShapeFlags = PublicShapeFlags;
    exports.Suspense = Suspense;
    exports.Text = Text;
    exports.Transition = Transition;
    exports.TransitionGroup = TransitionGroup;
    exports.callWithAsyncErrorHandling = callWithAsyncErrorHandling;
    exports.callWithErrorHandling = callWithErrorHandling;
    exports.camelize = camelize$1;
    exports.capitalize = capitalize$1;
    exports.cloneVNode = cloneVNode;
    exports.compile = compileToFunction;
    exports.computed = computed$1;
    exports.createApp = createApp;
    exports.createBlock = createBlock;
    exports.createCommentVNode = createCommentVNode;
    exports.createHook = createHook;
    exports.createRenderer = createRenderer;
    exports.createSlots = createSlots;
    exports.createTextVNode = createTextVNode;
    exports.createVNode = createVNode;
    exports.defineComponent = defineComponent;
    exports.effect = effect;
    exports.getCurrentInstance = getCurrentInstance;
    exports.h = h;
    exports.handleError = handleError;
    exports.inject = inject;
    exports.injectHook = injectHook;
    exports.instanceWatch = instanceWatch;
    exports.isReactive = isReactive;
    exports.isReadonly = isReadonly;
    exports.isRef = isRef;
    exports.markNonReactive = markNonReactive;
    exports.markReadonly = markReadonly;
    exports.mergeProps = mergeProps;
    exports.nextTick = nextTick;
    exports.onActivated = onActivated;
    exports.onBeforeMount = onBeforeMount;
    exports.onBeforeUnmount = onBeforeUnmount;
    exports.onBeforeUpdate = onBeforeUpdate;
    exports.onDeactivated = onDeactivated;
    exports.onErrorCaptured = onErrorCaptured;
    exports.onMounted = onMounted;
    exports.onRenderTracked = onRenderTracked;
    exports.onRenderTriggered = onRenderTriggered;
    exports.onUnmounted = onUnmounted;
    exports.onUpdated = onUpdated;
    exports.openBlock = openBlock;
    exports.popScopeId = popScopeId;
    exports.provide = provide;
    exports.pushScopeId = pushScopeId;
    exports.reactive = reactive;
    exports.readonly = readonly;
    exports.recordEffect = recordEffect;
    exports.ref = ref;
    exports.registerRuntimeCompiler = registerRuntimeCompiler;
    exports.render = render;
    exports.renderList = renderList;
    exports.renderSlot = renderSlot;
    exports.resolveComponent = resolveComponent;
    exports.resolveDirective = resolveDirective;
    exports.resolveDynamicComponent = resolveDynamicComponent;
    exports.resolveTransitionHooks = resolveTransitionHooks;
    exports.setBlockTracking = setBlockTracking;
    exports.setTransitionHooks = setTransitionHooks;
    exports.toHandlers = toHandlers;
    exports.toRaw = toRaw;
    exports.toRefs = toRefs;
    exports.toString = toString;
    exports.useCSSModule = useCSSModule;
    exports.useTransitionState = useTransitionState;
    exports.vModelCheckbox = vModelCheckbox;
    exports.vModelDynamic = vModelDynamic;
    exports.vModelRadio = vModelRadio;
    exports.vModelSelect = vModelSelect;
    exports.vModelText = vModelText;
    exports.vShow = vShow;
    exports.version = version;
    exports.warn = warn;
    exports.watch = watch;
    exports.withDirectives = withDirectives;
    exports.withKeys = withKeys;
    exports.withModifiers = withModifiers;
    exports.withScopeId = withScopeId;
  
    return exports;
  
  }({}));
  